Question

Resolva as equações a seguir.

Answer 1

Resposta:

A)5/18 B)b=-14 C)75/14

Explicação passo-a-passo:

A)

20x-5=2x

20x-2x=5

18x=5

X=5/18

B)

2(3-b)+4b=-8

6-2b+4b=-8

6+2b=b-8

2b-b=-8-6

B=-14

C)

4(x-3)/5-2x+6/10=x/25

4x-12/5-2x+6/10=x/25

10(4x-12)-5(2x+6)=2x

40x-120-10x-30=2x

30x-150=2x

30x-2x=150

28x=150

X=75/14