Question

X+y / 2 - x-y /3 =8 X+y/3 + x-y / 4 = 4

Answer 1

3x + 3y - 2x + 2y /6 = 8
X + 5y = 8 x 6
X + 5y = 48 ---------- equation 1

4x + 4y + 3x - 3y /12 = 4
7x + y = 4 x 12
7x + y = 48 ----------- equation 2

Applying substitution method
X = 48-5y
7(48-5y) + y = 48
336-35y+y = 48
-34y = 48-336
-34y = -288
Y = 288/34
Y = 8.477
X = 5.64