R K Bansal Solutions for Exercise 1: EXERCISE

Solve the following pairs of linear (simultaneous) equations using method of elimination by substitution:

$$\begin{gathered} 2x+7y=39 \\ 3x+5y=31 \end{gathered}$$

Solve the following pairs of linear (simultaneous) equations using method of elimination by substitution:

$\begin{array}{r}1.5x+0.1y=6.2\\ 3x-0.4y=11.2\end{array}$

Solve the following pairs of linear (simultaneous) equations using method of elimination by substitution:

$\begin{array}{r}2(x-3)+3(y-5)=0\\ 5(x-1)+4(y-4)=0\end{array}$

Solve the following pairs of linear (simultaneous) equations using method of elimination by substitution:

$\begin{array}{r}\frac{2x+1}{7}+\frac{5y-3}{3}=12\\ \frac{3x+2}{2}-\frac{4y+3}{9}=13\end{array}$

Solve the following pairs of linear (simultaneous) equations using method of elimination by substitution:

$\begin{array}{r}3x+2y=11\\ 2x-3y+10=0\end{array}$

Solve the following pairs of linear (simultaneous) equations using method of elimination by substitution:

$\begin{array}{r}2x-3y+6=0\\ 2x+3y-18=0\end{array}$

Solve the following pairs of linear (simultaneous) equations using method of elimination by substitution:

$$\begin{gathered} \frac{3x}{2}-\frac{5y}{3}+2=0 \\ \frac{x}{3}+\frac{y}{2}=2\frac{1}{6} \end{gathered}$$

Solve the following pairs of linear (simultaneous) equations using method of elimination by substitution:

$$\begin{gathered} \frac{x}{6}+\frac{y}{15}=4 \\ \frac{x}{3}-\frac{y}{12}=4\frac{3}{4} \end{gathered}$$