Question

Encontre o valor de x nas equações abaixo:
A)5 x=15
B)x-2=8
C)2x+3=15
D)-2x=10
E )5x-2=7+6

Answer 1

A)

5x=15

x=15/3

x=3

B)

x-2=8

x=8+2

x=10

C)

2x+3=15

2x=15-3

2x=12

x=12/2

x=6

D)

-2x=10

x=10/-2

x=-5

E)

5x-2=7+6

5x-2=13

5x=13+2

5x=15

x=15/5

x=3