Question

Simutaneous equation by substitution:y+2x=0,4x+y=3..................solve for x and y

Answer 1

1y + 2x = 0 ⇒ -2x - 1y = 0
4x + 1y = 3 ⇒ 4x + 1y = 3
2x = 3
2 2
x = 1.5
4(1.5) + y = 3
6 + y = 3
- 6 - 6
y = -3
(x, y) = (1.5, -3)