Question

3(4p-1)+9-4(p+1)=4p4

Answer 1

3 (4p-1)+9-4 (p+1)=4p4 (distributiva)
12p-3+9-4p-4=4p.4
12p-4p=4p.4+3-9+4
8p=4p.3+3-9+4
$\frac{8p}{4p} = 3 + 3 - 9 + 4$
2p=1
$p = \frac{1}{2} \: ou \: 0.5$