( )÷5+(40×( )-( )×15)÷15-6=50

问题描述:

( )÷5+(40×( )-( )×15)÷15-6=50

(135/7)/5+(40X(135/7)-(135/7)X15)/15-6=50

( )÷5+(40×( )-( )×15)÷15-6=50
设()=x
x/5+(40x-15x)÷15=56
x/5+25x/15=56
(25x+3x)/15=56
x=30
所以:
( 30)÷5+(40×( 30)-(30 )×15)÷15-6=50

(105 )÷5+(40×( 15)-(5 )×15)÷15-6=50