Question

 

240 - dong ngoac vuong 23 + ( 13 + 24 .3 - x)dong ngoac vuong =132.

Answer 1

240 - [ 23 + ( 13 + 24 . 3 - x ) ] = 132

240 - [ 23 + 13 + 72 - x ] = 132

240 - 23 - 13 - 72 + x = 132

132 + x = 132

x = 132 - 132

x = 0

Vậy x = 0

=))

Answer 2

\(240-\left[23+\left(13+24.3-x\right)\right]=132\)

\(23+\left(13+24.3-x\right)=240-132\)

\(23+\left(13+24.3-x\right)=108\)

\(13+24.3-x=108-23\)

\(13+24.3-x=85\)

\(24.3-x=85-13\)

\(24.3-x=72\)

\(72-x=72\)

\(x=72-72\)

\(x=0\)