Question

Resolva: com calculo

Answer 1

Resposta:

a)17/3

b)-11/4

c)-14

d)-25/8

Explicação passo-a-passo:

a)-9x+8=43

9x=-43-8

-9x=51

x=51/9   simplifica por 3

x=17/3

b)x-3(4-x)=7x-(1-x)

x-12+3x=7x-1+x

-12+3x=7x-1

3x-7x=-1+12

-4x=11

c)x/7=-2

x/7=-2(* 7)

x=-14

x=-11/4