作业帮4.5X+31.5/X=4.5X-31.5/(X-12)怎么解?
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4.5X+31.5/X=4.5X-31.5/(X-12)怎么解?
4.5X+31.5/X=4.5X-31.5/(X-12)怎么解?
4.5X+31.5/X=4.5X-31.5/(X-12)怎么解?
两遍都有4.5X
得31.5/X=-31.5/(X-12)
得X=12-X
X=6
9x+7x-x=4.5
20%x+20%x×30%x-20%x=4.5
6.5x-4.5x=93.6-6.5x-3.5x
4.5x+x=12
x+4.5x=0.
4.5X-X=3.5
x+24=4.5X
4.5x-x=10.5
4.5 x + x=22
4.5X+31.5/X=4.5X-31.5/(X-12)怎么解?
（X+X)+(X-X)+(X*X)+(X/X)=100
x*x*x*x*x=80000?
4.5-0.36x=6-0.51x x=?
5.5x+21-x=50-4.5x
13x-（4.5x+2.9)=0.5x+3.8×0.5
4.5x +x=17分之11 求x是多少?
5.5x+21-x=50-4.5x-11
0.7x+x=4.5x 解方程