Question

SISTEMAS CALCULE
x-3y=6
2x+3y=3

Answer 1

x = 6 + 3y

2(6 + 3y) + 3y = 3
12 + 6y + 3y = 3
9y = 3 - 12
y = -9/9
y = -1

x - 3×(-1) = 6
x = 6 - 3
x = 3