Question

Resolva as equações:
a) 2x-18=52 b)6x=12 c)12x-7x=25
d)3x+9=30 e)5y=75-105 f)4x+2x=168
h)18x=360

Answer 1

Resposta:

a)35

b)2

c)5

d)7

e)-6

f)28

g)7

h)20

Explicação passo-a-passo:

a)2x-18=52

2x=52+18

2x=70

x=70/2

x=35

b)6x=12

x=12/6

x=2

c)12x-7x=25

5x=25

x=25/5

x=5

d)3x+9=30

3x=30-9

3x=21

x=21/3

x=7

e)5y=75-105

5y= -30

y= -30/5

y= -6

f)4x+2x=168

6x=168

x=168/6

x=28

g)6x-2x=19+9

4x=28

x=28/4

x=7

h)18x=360

x=360/18

x=20

Espero ter ajudado

Answer 2

A) 2x-18=52
2x=52+18
2x= 70
X=70/2
X=35
B)
6x=12
X=12/6
X=2


C) 12x-7x=25
5x=25
X=25/5
X=5

D) 3x+9=30
3x= 30-9
3x= 21
X=21/3
X= 7
E)
5y= 75-105
5y= -30
Y= -30/5
Y-6

F) 4x+2x= 168
6x=168
X=168/6
X= 28


H) 18x=360
X=360/18
X=20