Question

encontre o X .

A)X+2=10 .
B)3X-7=0.
C)12X+3=12+3X.
D)X+2X-10=2X+20.
E)5X-2X=20

Answer 1

Resposta:

a)x=10-2

x=8

b)3x=0-7

3x= -7

x= -7/3

x=2,333

c)12x-3x=12-3

9x=9

x=9/9

x=1

d)x+2x+2x=20+10

5x=30

x=30/5

x=6

e)3x=20

x=20/3

x=6,66