Question

3) 2x - 39 = - 79
5)5x - 20 = 10 + 3x
7)4x = 12
9)35x = -105​

Answer 1

→ Cálculo :

A) 2x - 39 = - 79

2x = -79 + 39

2x = -40

x = -40 ÷ 2

x = -20

B) 5x - 20 = 10 + 3x

5x - 3x = 10 + 20

2x = 30

x = 30 ÷ 2

x = 15

C) 4x = 12

x = 12 ÷ 4

x = 3

D) 35x = -105​

x = -105 ÷ 35

x = -3

Answer 2

olá !!!

$3)\\2x - 39 = - 79\\2x=-79+39\\2x=-40\\x=-20\\5)\\5x - 20 = 10 + 3x\\5x-3x=10+20\\2x=30\\x=30/2\\x=15\\7)\\4x = 12\\4x=12\\x=12/4\\x=3\\9)\\35x = -105\\x=-105/35\\x=-3$

espero ter lhe ajudado

Att: Jovem Lendário