Question

Resolva as equações:

A) 2×+10=0

B) ×+1=14

C)5×-3=12

D) 2×-3=5

E) 2×-7=1

F) 2×-3+×=18

Answer 1

a)2x+10=0
2x=0-10
2x=-10
x=-5
b)x+1=14
x=14-1
x=13
c)5x-3=12
5x=12+3
5x=15
x=3
d)2x-3=5
2x=5+3
2x=8
x=4
e)2x-7=1
x=8/2
x=4
f)2x-3+x=18
3x=21
x=7