Question

find the value of 'a' if x=3; y=1 is a solution of the equation 3x-y=a​

Answer 1

Answer:

3x - y = a

(3×3) - (1) = a

9 - 1 = a

8 = a

or, a = 8

Answer 2

question :-

find the value of 'a' if x=3; y=1 is a solution of the equation 3x-y=a ?

To find :-

Value of 'a'

Given :-

• x = 3

• y = 1

Solution :-

put the given values in the equation .

$\bold{:\longrightarrow \: 3 \: x \: - \: y \: = \: a}$

$\bold{:\longrightarrow \: 3 \: \times \: 3 \: - \: 1\: = \: a}$

$\bold{:\longrightarrow \:9\: - \: 1 \: = \: a}$

$\bold{:\longrightarrow \:8 \: = \: a}$

Varification :-

Put the values in the equation .

• x = 3

• y = 1

• a = 8

$\bold{:\longrightarrow \: 3 \: x \: - \: y \: = \: a}$

$\bold{:\longrightarrow \: 3 \: \times \: 3 \: - \: 1 \: = \: 8}$

$\bold{:\longrightarrow \:9 \: - \: 1 \: = \: 8}$

$\bold{:\longrightarrow \:8 \: = \: 8}$

$\bold{:\longrightarrow \:LHS \: = \: RHS }$

$\: \: \: \: \bold{\bigstar\: \: \: \: \: \: hence \: varified }$