sistem persamaan 2x+3y=-7dan2x+y=-5

2x+3y=-7
2x+y = -5
Dikurangi
2y = -2
y = -1

2x+y = -5
2x + (-1) = -5
2x -1 = -5
2x = -5+1
2x = -4
x = -4/2
x = -2

Semoga paham