4 - ( 27 - 3 ) = x - ( 13 - 4 )
4 - 24 = x - 9
- 20 = x - 9
x = - 20 + 9
x = - 11
\(4-\left(27-3\right)=x-\left(13-4\right)\)
\(4-27+3=x-13+4\)
\(-20=x-13+4\)
\(-20-4=x-13\)
\(-24=x-13\)
\(-24+13=x\)
\(-11=x\)
\(4-\left(27-3\right)=x-\left(13-4\right)\)
\(4-\left(27+3\right)=x-9\)
\(-20=x-9\)
\(x=-20+9\)
\(x=-11\)
4 - ( 27 - 3 ) = x - ( 13 - 4 )
=> 4 - 24 = x - 9
=> 4 - 24 + 9 = x
=> -11 = x
=> x = -11
Vậy :...
Chúc bn học giỏi^^
4-(27-3)=x-(13-4)
4-(27-3)=x-9
4-24 =x-9
-20 =x-9
=>x-9 = -20
x =(-20)+9
x = -11