Question

Resolva o sistema de equações.
5x-7y= 58

y=-x+2

Answer 1

Resposta:

5x-7y=58

y=-x+2

5x-7(-x+2)=58

5x+7x-14=58

12x=58+14

12x=72

x=72/12 = 6

y=-x+2

y=-6+2

y=-4