Respuesta :

malalamabia
for all the equations you substitute the given values of n.you will then subtract the product of 3n from both sides. so you will end up with three values of M for this question.so:

M+3(-2)=7
M-6+6=7+6
M=7+6
M=13

M+3(0)=7
M=7

M+3(1)=7
M+3-3=7-3
M=7-3
M=4