解方程.0.9*(9-X)=2.7 0.6X+20=26 8/(3X+1)=0.2 5X-2*0.3=4.4
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![解方程.0.9*(9-X)=2.7 0.6X+20=26 8/(3X+1)=0.2 5X-2*0.3=4.4](/uploads/image/z/329831-71-1.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B.0.9%2A%289-X%29%3D2.7+0.6X%2B20%3D26+8%2F%EF%BC%883X%2B1%EF%BC%89%3D0.2+5X-2%2A0.3%3D4.4)
解方程.0.9*(9-X)=2.7 0.6X+20=26 8/(3X+1)=0.2 5X-2*0.3=4.4
解方程.0.9*(9-X)=2.7 0.6X+20=26 8/(3X+1)=0.2 5X-2*0.3=4.4
解方程.0.9*(9-X)=2.7 0.6X+20=26 8/(3X+1)=0.2 5X-2*0.3=4.4
0.9*(9-X)=2.7
9-X=3
X=6
0.6X+20=26
3X+10=130
3X=120
X=40
8/(3X+1)=0.2
0.2(3X+1)=8
3X+1=40
3X=39
X=13
5X-2*0.3=4.4
5X-0.6=4.4
5X=5
X=1
6 10 13 0.76