Question

Determine o valor de x na igualdade, 3 ( ax – 7a ) = 2ax – 30, sendo U = IR

Answer 1

RESOLVENDO:

1°parte

3=2ax-30

2ax=33

ax=33/2

2°parte

ax-7a=2ax-30

33/2 - 7a= 2.33/2 - 30

33/2 -7a=33-30

33/2 - 7a= 3

-7a= 3.2/33

7a= -6/33

a= -6/33.7

a= -6/231

3°parte

ax=33/2

a= -6/231

-6/231 . x=33/2

x= 33/2 . (-231/6)

x=16,5 . (-38,5)

x = -635,25 ---> Resultado