Question

resolva as equações do 2° a) 4× -8 = 2× +12
b) 6× -15 = 3× +30
c 2.(x + 2)=4. (x -8)
d 5. (x + 2) = 35​

Answer 1

a) 4× -8 = 2× +12

4x-2x=12+8

2x=20

x=20÷2

x=10

b) 6× -15 = 3× +30

6x-3x=30+15

3x=45

x=45÷3

x=15

c 2.(x + 2)=4. (x -8)

2x+4=4x-32

2x-4x=-32-4

-2x= -36

x= -36÷ (-2)

x=18

d 5. (x + 2) = 35

5x+10=35

5x=35-10

5x=25

x=25÷5

x=5

espero ter ajudado :)