Question

c) 3x + 2y = -4
4x - 3y = 23​

Answer 1

Resposta:

3x+2y=-4 --> 2y=-4-3x -->y=-4-3x/2

4x-3y=23

4x-3(-4-3x/2)=23

4x-6+9x=23

13x=23+6

13x=29

x=29/13

x=2

3x+2y=-4

3.2+2y=-4

6+2y=-4

2y=-4-6

2y=-10

y=-10/2

y=-5