Question

2x-2y-4=0, or 3x-4y-2=0, in this form of equation, how we can get answer like this, x=10/7. or y=4/7​

Answer 1

Given

$2x - 2y - 4 = 0 \\ \\ = > 2x - 2y = 4 \\ \\ = > 2(x - y) = 4 \\ \\ = > x - y = 2 \\ \\ = > x = 2 + y \\ \\ again \\ 3x - 4y - 2 = 0 \\ \\ = > 3(2 + y) - 4y - 2 = 0 \\ \\ = > 6 + 3y - 4y - 2 = 0 \\ \\ = > - y + 4 = 0 \\ \\ = > - y = - 4 \\ \\ = > y = 4 \\ \\ and \\ x = 2 + 4 \\ \\ = > x = 6$

Solved