x-0.75x=2..急
问题描述:
x-0.75x=2..急
答
x-0.75x=2.5
0.25x=2.5
x=2.5÷0.25
x=10
x-0.75x=2..急
x-0.75x=2.5
0.25x=2.5
x=2.5÷0.25
x=10