Question

2) Resolver:
a) 5x + 1 = 36
b) 2x - 8 = 8
c) 3x + 1 = 19
d) 9x - 7 = 5x + 13
e) 2.(2x - 1) - 6.(1 - 2x) = 2.(4x - 5)​

Answer 1

Resposta:

a) x=7

b) x=0

c) x=6

d) x=5

e) x=8

Explicação passo-a-passo:

a) 5x+1=36

5x=36-1

5x=35

x=35:5

x=7

b)2x-8=8

2x=8-8

2x=0

x=0:2

x=0

c)3x+1=19

3x=19-1

3x=18

x=18:3

x=6

d)9x-7=5x+13

9x-5x=7+13

4x=20

x=20:4

x=5

e)2.(2x-1)-6.(1-2x)=2.(4x-5)

4x-2-6-12x=8x-10

4x-12x-8x=2+6-10

-16x=-2

- 16x=-2 (-1)

16x=2

x=16:2

x=8