Question

1 resolva os sistemas abaixo;
A 2x+3y=7
3x-5y=20

B x+5y=-24
x+y=10

C 2x+y=-3
x-3y=-26

D 3x-2x=6
3x-5y=20

Answer 1

a) -x + 8y= -13

b) 4y=34
c)x+4y= -23
d) -2x=-6