简算 5.6x0.7+0.2x5.6+0.56 解方程 8.25-2x=7.625 3x+15=5x-5
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![简算 5.6x0.7+0.2x5.6+0.56 解方程 8.25-2x=7.625 3x+15=5x-5](/uploads/image/z/9219-3-9.jpg?t=%E7%AE%80%E7%AE%97+5.6x0.7%2B0.2x5.6%2B0.56+%E8%A7%A3%E6%96%B9%E7%A8%8B+8.25-2x%3D7.625+3x%2B15%3D5x-5)
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简算 5.6x0.7+0.2x5.6+0.56 解方程 8.25-2x=7.625 3x+15=5x-5
简算 5.6x0.7+0.2x5.6+0.56 解方程 8.25-2x=7.625 3x+15=5x-5
简算 5.6x0.7+0.2x5.6+0.56 解方程 8.25-2x=7.625 3x+15=5x-5
5.6x0.7+0.2x5.6+0.56
=5.6x0.7+0.2x5.6+5.6x0.1
=5.6x(0.7+0.2+0.1)
=5.6
8.25-2x=7.625
2x=0.625
x=0.3125
3x+15=5x-5
2x=20
x=10
5.6x0.7+0.2x5.6+0.56
=5.6x0.7+0.2x5.6+5.6×0.1
=5.6(0.7+0.2+0.1)
=5.6
8.25-2x=7.625
2x=0.625
x=0.3125
3x+15=5x-5
2x=20
x=10
简算 5.6x0.7+0.2x5.6+0.56 解方程 8.25-2x=7.625 3x+15=5x-5
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