Algebraic Methods of Solving a Pair of Linear Equations

IMPORTANT

Algebraic Methods of Solving a Pair of Linear Equations: Overview

This topic covers concepts such as Algebraic Methods of Solving a Pair of Linear Equations, Substitution Method of Solving a Pair of Linear Equations, Elimination Method of Solving a Pair of Linear Equations, etc.

Important Questions on Algebraic Methods of Solving a Pair of Linear Equations

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If x=3p and y=2p5+1, then find the value of p for which x=5y.

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Express two simultaneous linear equations by drawing graphs.
x-y=3, x3+y2=6

EASY
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Find the product of the value of x and y by solving the pair of equations 23x+29y=98, 29x+23y=110.

EASY
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Taxi charges in a city consist of fixed charges per day and the remaining depending upon the distance travelled in kilometres. If a person travels 110 km, he pays 690, and for travelling 200 km, he pays 1050. If the fixed charges per day is x and the rate per km is y, then find the value of x+y ?

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Solve the following system of equations by the elimination method. Then, write the value of x2+y2 as final answer.

2x+3y=463x+5y=74

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For what value of 't' the following pair of linear equations has a no solution? 2x-ty=5 and 3x+2y=11?

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The solution of the pair of linear equations 2x+3y=8 and x+2y=5 is

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Sum of the areas of two squares is 850 cm2. If the difference of their perimeters is 40 cm. Find the sides of the two squares.

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Out of 555 km, Vishal travelled certain distance by bus and remaining distance by car. Bus travels with an average speed of 60 km/hr and the average speed of car is 75 km/hr. He takes total 8 hours to complete the journey. Find the distance that Vishal travelled by bus in km.

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Solve the following pair of linear equation by elimination method.

3x+4y=10 and 2x-2y=2

MEDIUM
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The larger of two supplementary angles exceeds the smaller by 18°. Then the angles are

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The denominator of a fraction is 4 more than twice its numerator. Denominator becomes 12 times the numerator, if both the numerator and the denominator are reduced by 6, find the fraction.

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If 15x + 17y = 21 and 17x + 15y = 11, then find the value of x + y.

EASY
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Find the value of variables which satisfies the following equation:

2x+5y=20

3x+6y=12

EASY
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Find the solution of a pair of linear equation:

y-2x=1

x+2y=12

MEDIUM
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In the given figure, 3×CP=PD=9 cm and AP=4.5 cm. Find BP.
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On comparing the ratios a1a2, b1b2 and c1c2, find out whether the below pair of linear equations is consistent or inconsistent.
3x-y=2;  6x-2y=4