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15%x+28%x=154.8的过程

∵ x+13%x-28%x=3.4∴X+0.13X-0.28X=3.40.85X=3.4∴X=4

X-25%X=28 0.75X=28 X=28÷0.75 X=37又3分子1 X+15%X=4.6 1.15X=46 X=46÷1.15 X=4035X-21=543/5X=54+21=75 X=75÷3/5 X=125

(15%+12%)x=2827%x=28 x=28÷27% x=2800/27

求x?(1+15%)x=3.22 则x=3.22/1.15=2.8

1.5%x*15+x=1323 22.5%x+x=1323 122.5%x=1323 x=1323*100÷122.5=1080

原式=(100%+13%28%)X =85%X =3.4所以X=3.5÷85%=4.1176470588235..

1.15x=75.9 x=66 25%x=20 25x=2000 x=80 x+350=6000 x=5650

x-15%x=1680x-0.15x=16800.85x=1680x=1680÷0.85x≈1976.47

解:x+15*1.5/100x=1323 (100+15*1.5)/100x=1323 122.5/100=1323 x=1323*100/122.5 x=1080

(x+18)/10 = 28%x(x+18)/10=0.28x x+18=2.8x 1.8x=18 x=10

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