Question

Resolva as equações, muita atenção com a distributiva
a) 3(x+2)=15
b)5(x-1)=30
c)2(x-1)-7=16
d)7(x-2)=5(x+3)
e)2(3x-5)-x=10-3x
f)2(x-5)+4(x-1)=0
g)2(x-6)=-3(5+x)
h)3(x+10)-2(x-5)=0
i)3(x-1)-( 2x -4)=1
j)7(x-1) -2 (x - 5)=x -5

Eu preciso do passo a passo de todas
Por favor ​

Answer 1

a) 3(x+2)=15

x+2=15/3

x+2=5

x=5-2

x=3

b)5(x-1)=30

x-1=30/5

x-1=6

x=6+1

x=7

c)2(x-1)-7=16

2x-2-7=16

2x=16+2+7

2x=25

x=25/2

d)7(x-2)=5(x+3)

7x-14=5x+15

7x-5x=15+14

2x=29

x=29/2

e)2(3x-5)-x=10-3x

6x-10-x=10-3x

6x+3x-x=10+10

8x=10

x=10/8

x=5/4

f)2(x-5)+4(x-1)=0

2x-10+4x-4=0

2x+4x=10+4

6x=14

x=14/6

x=7/3

g)2(x-6)=-3(5+x)

2x-12=-15-3x

2x+3x=-15+12

5x=-3

x= -3/5

h)3(x+10)-2(x-5)=0

3x+30-2x+10=0

3x-2x=-30-10

x=-40

i)3(x-1)-( 2x -4)=1

3x-3-2x+4=1

3x-2x=1+3-4

x=0

j)7(x-1) -2 (x - 5)=x -5

7x-7-2x+10=x-5

7x-2x-x=-5+7-10

4x=-8

x= -8/4

x= -2