x+8=(100-x)×(1-25%) 这个方程肿么算?答对了还有悬赏分!
问题描述:
x+8=(100-x)×(1-25%) 这个方程肿么算?答对了还有悬赏分!
答
x+8=(100-x)*0.75
x+8=70-0.75x
1.75x=62
x=35.4286
答
x+8=(100-x)×(1-25%)
x+8=75-0.75x
1.75x=67
x=268/7
答
x+8=(100-x)×(1-25%)
x+8=(100-x)×0.75
x+8=75-0.75x
x+0.75x=75-8
1.75x=67
x=268/7
答
x+8=(100-x)*75%
x+8=(100-x)*0.75
x+8=75-0.75x
x+0.75x=75-8
1.75x=67
x=67/1.75
x=268/7
答
x+8=(100-x)×(1-25%)
x+8=0.75(100-x)
x+8=75-0.75x
x+0.75x=75-8
1.75x=67
x=67÷1.75
x=6700/175
x=38又50/175
x=38又2/7