Question

a) 5(x – 4) = 30
d) 4(x + 7) = x + 16
g) 6(3x + 4) = 6
b) – 8(x – 3) = 48
e) 2(x – 4) = 6
h) 2(x – 3) = 5(x – 6)
encontrem o x pfv

Answer 1

Resposta:

a) 5x-20=30

5x=30+20

5x=50 x=50/5

x=10

d) 4x+28=x+16

4x-x=16-28

3x=-12 x=(-12)/3

x= -4

g) 18x+24=6

18x=6-24

18x= -18 x=(-18)/18

x= -1

b) -8x+24=48

-8x=48-24

-8x=24 x=24/(-8)

x= -3

e) 2x-8=6

2x=6+8

2x=14 x=14/2

x=7

h) 2x-6=5x-30

2x-5x=-30+6

-3x=-24 x=(-24)/(-3)

x= 8

coloquei as letras na mesma ordem da sua pergunta. (a,d,g,b,e,h)