Question

Tìm số nguyên x biết : 

4- ( 27-3 ) = x - ( 13 - 4 )

Answer 1

4-(27-3)=x-(13-4)

4-24=x-9

-20=x-9

-20+9=x

x=-11

vay x=-11

Answer 2

4-(27-3)=x-(13-4)

4-24=x-9

-20=x-9

 x=-9+20

x=11