Question

4x+2y=12
2x+3y=0,5
qual a resposta????????

Answer 1

2y=12-4x

y=12-4x/2

y=6-2x

2x+3(6-2x)=0,5

2x+18-6x=0,5

4x=17,5

x=4,375

4(4,375)+2y=12

17,5+2y=12

y= -5,5/2

y= -2,75

R: x=4,375 y= -2,75