Question

[ ( 6x - 72 ) : 2 - 84 ] × 28 = 5628

Answer 1

[(6x-72):2-84]×28=5628

⇔x=107 .... 

Vậy x=107

Answer 2

\([(6x-72):2-84].28=5628\)

\((6x-72):2-84=5628:28\)

\((6x-72):2-84=201\)

\((6x-72):2=201+84\)

\((6x-72):2=285\)

\(6x-72=285.2\)

\(6x-72=570\)

\(6x=570+72\)

\(6x=642\)

\(x=642:6\)

\(x=107\)