列方程解 5x-7.2+2.8=35.6

问题描述:

列方程解 5x-7.2+2.8=35.6

5x=7.2-2.8+35.6
5x=40
x=8
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5x=40
x=8

5x-7.2+2.8=35.6
5x-4.4=35.6
5x=35.6+4.4
5x=40
x=8