Question

A) 4 x - 20 = 10 - 2 x

B) x - 10 = 11 - 2 ×

C) 3 x - 15 = 5 - 2 x

D) 5 × - 10 = 14 - 3 ×

E) 3 × + 15 = - 10 - 2 ×

Por favor me ajudem!

Answer 1

Resposta:

a)4x+2x=10+20

6x=30

x=30÷6=5

x=5

b)x+2x=11+10

3x=21

x=21÷3=7

x=7

c)3x+2x=5+15

5x=20

x=20÷5=

x=4

d)5x+3x=14+10

8x=24

x=24÷8

x=3

e)3x+2x=-10-15

5x=-25

x=-25÷5

x=-5