Question

4x+6y=376 x+y=72 qual éo resultado??

Answer 1

{4x+6y=376
{x+y=72
x=72-y
4(72-y)+6y=376
288-4y+6y=376
-4y+6y=376-288
2y=88
y=88/2
y=44
x=72-y
x=72-44
x=28
S={(28, 44)}