Revathi Sivasankar and Manikandan Jayaprabha Solutions for Chapter: Algebra, Exercise 1: EXERCISE

A quantity that takes on _____ value is called a variable.

A quantity having a fixed value is called a _____.

The cost of $3$ pencils when $1$ pencil costs $₹x$ can be expressed algebraically as $\left(3+x\right)$.

In a box there are $x$ pencils and $y$ pens. I can represent this algebraically as $\left(x+y\right)$.

You are $6$ years older than your sister. If your age is $x$, your's sister age is $\left(6-x\right)$ year.

Your age is $a$, your brother's age is $b$. Your combined ages after $6$ years will be $\left(a+b+6\right)$.

One apple costs $₹x$ and one banana costs $₹y$. $3$ apples and $4$ bananas will cost $₹\left(3x+4y\right)$.

$16x$ means $16+x$.