解方程60% x=75 x×(1-20%)=96 &...

解方程60% x=75 x×(1-20%)=96 45% x+42=60.
2025-06-28 11:21:14
推荐回答(1个)
回答1:

(1)60%x=75
    60%x÷60%=75÷60%
            x=125;

(2)x×(1-20%)=96
          x×80%=96
     x×80%÷80%=96÷80%
               x=120;

(3)45%x+42=60
  45%x+42-42=60-42
        45%x=18
   45%x÷45%=18÷45%
           x=40.