Question

Agustin solved an equation as shown. What error did Agustin make? What is the correct answer?

Answer 1

Subtract 3/4x from both sides

1/3x-4-3/4x= 3/4x+1-3/4x

-5/12x-4=1

Add 4 to both sides

-5/12x-4+4=1+4

-5/12x=5

Multiply both sides by 12/(-5)

(12/-5)*(-5/12x)=  (12/-5)*(5)

x= 12

I hope that's help.