解方程35x-8=225x=100×75%58x+34x=1116．

Question

解方程
(3)/(5)x-8=22
5x=100×75%
(5)/(8)x+(3)/(4)x=(11)/(16)．

Answer 1

①(3)/(5)x-8=22
      (3)/(5)x-8+8=22+8
             (3)/(5)x=30
        (3)/(5)x×(5)/(3)=30×(5)/(3)
                x=50

②5x=100×75%
    5x=75
5x÷5=75÷5
      x=15

③(5)/(8)x+(3)/(4)x=(11)/(16)
        (11)/(8)x=(11)/(16)
  (11)/(8)x×(8)/(11)=(11)/(16)×(8)/(11)
             x=(1)/(2)