Question

40％x-4分之1=12分之7 列方程

Answer 1

40%x-1/4=7/12
40%x=5/6
2/5x=5/6
x=25/12

Answer 2

解方程:
40％x-1/4=7/12
40％x=7/12+1/4
40％x=5/6
x=25/12