Question

Resolva As Equaçoes:

a)x-4=3 f)x-39=-79 g)10=x+8 h)15=x+20
b)x-7=-7
c)x+9=-1
d)x+28=11
e)x-109

Answer 1

a) x-4=3
x=3+4
x=7

b) x-7=-7
x=-7+7
x=0

c) x+9=-1
x=-1-9
x=-10

d)x+28=11
x=11-28
x=-17

e)x-109=0
x=109

f) x-39=-79
x=-79+39
x=40

g)10=x+8
x=10-8
x=2

h)15=x+20
x=15-20
x=-5