Question

A e B são grandezas IP
A B
8 X
7 16​

Answer 1

Resposta:

br /> A) x+y=8<br /> -9x+9y=18<br /><br /> b)3x+3y=144<br /> x-3y=16<br /><br /> c)3x+2y=40<br /> x-3y=-5<br /><br /> d)4x+y=7<br /> 2x-5y=9