Question

Resolva a equação: A) 4X-8=6+2 B) X+5=20-4X C) 9X-4X+10=7X-30 D) 5X-3=2X+9 ME AJUDEM PFV!!!

Answer 1

Resposta:

A) 4X-8=6+2

4x = 8 +8

4x = 16

x = 16/4

x = 4

B) X+5=20-4X

X + 4X = 20 - 5

5X = 15

X = 15/5

X = 3

C) 9X-4X+10=7X-30

5X - 7X = -30 - 10

- 2X = - 40

X = (-40) : (-2)

X = 20

D) 5X-3=2X+9

5X - 2X = 9 + 3

3X = 12

X = 12/3

X = 4