Question

几道百分数方程,..快115%x=0.69 x-25%x=15 27%x+36%x=12.6 20%x=302 急死了

Answer 1

115%x=0.69

1.15x=0.69

x=0.69÷1.15

x=0.6

x-25%x=15

75%x=15

x=15÷0.75

x=20

27%x+36%x=12.6

0.63%x=12.6

x=12.6÷063

x=0.2

20%x=302

0.2x=302

x=302÷0.2

x=1510