Question

Find the value of x from the following equation: 3x+y=8 ; x- y = 4 .​

Answer 1

Answer:

3

Explanation:

we can add both the equations to get -

3x + y + x - y = 8+4 ( LHS always add or subtract with LHS and RHS always add and subtract with RHS)

=> 4x = 12

=> x = 12/4 = 3