Question

Tìm số nguyên x thỏa mãn - (x + 84) + 213 =16 thì x= ?

Answer 1

Ta có :

\(-\left(x-84\right)+213=16\)

\(-\left(x-84\right)=16-213\)

\(-\left(x-84\right)=-197\)

\(=>x-84=197\)

\(x=197+84\)

\(x=281\)

Answer 2

\(-x-84+213=16\)

\(-x-84=16-213\)

\(-x-84=-197\)

\(-x=-197+84\)

\(-x=-113\)

\(=>x=113\)

Answer 3

-(x+84) + 213 =16

-(x+84) = 16 - 213

-(x+84)= -197

--> x+84 = 197

-->    x= 197-84

-->    x= 113

Vậy x=113