解方程(还要要验算) x+3.2=4.6 x -1.8=4 x-2=15 x1.6x=6.4 x÷7=0.3 x÷3=2.1(快)
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解方程(还要要验算) x+3.2=4.6 x -1.8=4 x-2=15 x1.6x=6.4 x÷7=0.3 x÷3=2.1(快)
解方程(还要要验算) x+3.2=4.6 x -1.8=4 x-2=15 x1.6x=6.4 x÷7=0.3 x÷3=2.1(快)
解方程(还要要验算) x+3.2=4.6 x -1.8=4 x-2=15 x1.6x=6.4 x÷7=0.3 x÷3=2.1(快)
x+3.2=4.6
x=4.6-3.2
x=1.4
x -1.8=4
x=4+1.8
x=5.8
x-2=15
x=15+2
x=17
1.6x=6.4
x=6.4/1.6
x=4
x÷7=0.3
x=0.3*7
x=2.1
x÷3=2.1
x=2.1*3
x=6.3
x+3.2=4.6 x -1.8=4 x-2=15
x+3.2-3.2=4.6-3.2 x-1.8+1.8=4+1.8 x-2+2=15+2
x=1.4 x=5.8...
全部展开
x+3.2=4.6 x -1.8=4 x-2=15
x+3.2-3.2=4.6-3.2 x-1.8+1.8=4+1.8 x-2+2=15+2
x=1.4 x=5.8 x=17
验算:1.4+3.2=4.6 验算:5.8-1.8=4 验算:17-2=15
(先做这点了)
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x+3.2=4.6 x -1.8=4 x-2=15
x=4.6-3.2 x=4+1.8 x=15+2
x=1.4 ...
全部展开
x+3.2=4.6 x -1.8=4 x-2=15
x=4.6-3.2 x=4+1.8 x=15+2
x=1.4 x=5.8 x=17 1.4+3.2=4.6 5.8-1.8=4 17-2=15
1.6x=6.4 x/7=0.3 x/3=2.1
x=6.4/1.6 x=0.3*7 x=2.1*3
x=4 x=2.1 x=6.3
1.6*4=6.4 2.1/7=0.3 6.3/3=2.1
收起