Question

A) x + 30 = 40

В) 30 - 20 + 2x = 10

C) 3x - 10 + 13 = 2x + 28

D) 13y - 23 - 45 = - 7x + 12

E) 4. (x + 3) - x = 24 + x​

Answer 1

Resposta:

a) 10 + 30 = 40

B) 2x = 10+30+20

2×=60

60÷2= 30

x = 30

C) 3x- 2× = 28 +10 - 13

x = 25

D) 13y + 7× = 12 + 23

13y , 7x = 35

E ) 4x + 3 - x =24+ x

4x-× -x =24-3

2x =21

2x÷21=10,50