Question

4) Resolva as equacões do 1° grau, calculando o valor de
a) 4x - 20 = 16
c) 6x + 15 = 99​

Answer 1

Resposta:

4x = 16+20

4x = 36

x = 36/4

x= 9

Explicação passo-a-passo:

6x = 99-15

6x = 84

x = 84/6

x= 14

Answer 2

Resposta:

a) 4x - 20 = 16

4x = 16 + 20

4x = 36

x= 36/4

x= 9

c) 6x +15 = 99

6x = 99 - 15

6x = 84

x= 84/6

x = 14