Question

determine o x

a)5x-4=11

b)8x+20=68

Answer 1

a)5x-4=11
5x=11+4
5x=15
x=15/5
x= 3

b) 8x+20=68
8x=68-20
8x=48
x=48/8
x=6

Answer 2

a) x=3
b) x=6

resolução: a) 5x=15 x=3
b) 8x=68-20 8x=48 x=6