Question

Os números m,p e q são racionais. Sabe-se,ainda,que
m=2p-3 q=p+3 2m+q=12
calcule os valores de m,p e q

Answer 1

m=2p-3
q=p+3

2m+q=12
2(2p - 3) + (p + 3) = 12
4p - 6 + p + 3 = 12
5p - 3 = 12
5p = 12 + 3
5p = 15
p = 15/5
p = 3

Answer 2

2m + q = 12
2 x (2p - 3) + (p + 3) = 12
4p - 6 + p + 3 = 12
5p - 6 + 3 = 12
5p - 3 = 12
5p = 12 + 3
5p = 15
p = 15 : 5
p = 3

q = p + 3
q = 3 + 3
q = 6

m = 2p - 3
m = 2 x 3 - 3
m = 6 - 3
m = 3