x+120/100x=7.7
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x+120/100x=7.7
x+120/100x=7.7
x+120/100x=7.7
x+120/100x=7.7
100x+120x=770
220x=770
x=7/2
x=3.5
(X+X)+(X-X)+(X*X)+(X/X)=100
x+120/100x=7.7
X+X+X+X+X+X+100X=1690 问:X等于多少
(x-120)/120=(120+x-100)/(x-120+100)
(120+X)/120=X/100
x+120/100x=7.
(0.2-x)(500-100x)=120
(120-x)/(100+x)=3/8 ...
100-2x+5x=120(x+3)×5-2x=30100-(4x+1)-(4x+1)=204x+8=6x-10
100-2x+5x=120(x+3)×5-2x=30100-(4x+1)-(4x+1)=204x+8=6x-10
(x+x)+(x-x)+(xx)+(x/x)=100 求x的值?用方程解
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
x(120+x)*80%=x-76
x(x+1)(x-1)=120
x-x/4-120=x/2
0.5X+120+0.3X=X
x/(120-x)=x/60