Question

解下列方程75%x+55%x=546 136%x-x=36 125%x-103%x=8.8 x+12%x=48.16

Answer 1

75%x+55%x=546

1.3x=546

x=546÷1.3

x=420

136%x-x=36

0.36x=36

x=36÷0.36

x=100

125%x-103%x=8.8

0.22x=8.8

x=8.8÷0.22

x=40

x+12%x=48.16

1.12x=48.16

x=48.16÷1.12

x=43