作业帮1.75％X=15.52.180*40％X=8/53.4X+5％X=3/4
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1.75％X=15.52.180*40％X=8/53.4X+5％X=3/4
1.75％X=15.5
2.180*40％X=8/5
3.4X+5％X=3/4
1.75％X=15.52.180*40％X=8/53.4X+5％X=3/4
过程如下1.75％X=15.5
75X=1550
X=1550/75=(25*62)/25*3=62/3
2.180*40％X=8/5
18*4X=8/5
18X=2/5
9X=1/5
X=1/45
3.4X+5％X=3/4
400X+5X=75
405X=75
X=75/405=15*5/81*5=15/81=5/27
1.75％X=15.5
75X=1550
X=(25*62)/25*3=62/3
2.180*40％X=8/5
18*4X=8/5
18X=2/5
X=1/9
3.4X+5％X=3/4
400X+5X=75
405X=75
X=15*5/81*5=15/81
过程如下1. 75％X=15.5
75X=1550
X=1550/75=(25*62)/25*3=62/3
2. 180*40％X=8/5
18*4X=8/5
18X=2/5
9X=1/5
X=1/45
3. 4X+5％X=3/4
400X+5X=75
405X=75
X=75/405=15*5/81*5=15/81=5/27
1.75％X=15.52.180*40％X=8/53.4X+5％X=3/4
180=( )x( )x( )x( ) ×( )
解方程40+x+x=180
x*(40-x)/2=180
2x+40％x=180
x-40%x=
40%x+180=4／5x 40%x+180=4／5x
① （x-5)/8+40=（x-5)/6② x+（3x+1）+(x/2 -1)=180
180=( )x( )=( )X( )=( )X( )
x-40%x-40%x=15
x+40=2x x=?
X×X+(40-X)=58
X乘以X等于40 ---------------------X=?
10x+x*x=40
(x+40%x)×85%-x=95
(x+40%x)×85%-x=95
4x+x=40x
40%x+70%x-x=1.8