Question

calcule o valor do x:A)5X+15=-40 ?
B)7X+32=-X-80?
Thks ^.^

Answer 1

$5x+15= - 40 \\ 5x = - 40 - 15 \\ 5x = - 55\\ x = - 55 \div 5 \\ x = - 11$
$7x+32=-X-80 \\ 7x + x = - 80 - 32 \\ 8x = - 112 \\ x = - 112 \div 8 \\ x = - 14$

Answer 2

Oi

a) 5x + 15 = - 40

5x = - 40 - 15

5x = - 55

x = - 55/5 ÷ 5

x = - 11

Resposta: x = - 11

b) 7x + 32 = - x - 80

7x + x = - 80 - 32

8x = - 112

x = - 112/8 ÷ 8

x = - 14

Resposta: x - 14

Bons estudos