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18十5x 21解方程怎么解

5*=21-18 *=3/5

18+5x=21 解: 5x=21-18 5x=3 x=3/5 x=0.6

18+5X=21解:5x=21-18 5x=3 x=0.6

5x=21-185x=3 x=3除以5 x=O.6

21-18=5x x=3除以5=0.6

18+5x=215x=21-185x=3x=0.6

18-5x=2118-21=5x-3=5xx=-3/5

18+5X=21 解:18+5X-18=21-18 5X=3 5X÷5=3÷5 X=3/5

5x=21-18=3 x=3÷5=3/5

18+5x=21解:18+5x一18=21一18 5x=3 x=3÷5 x=0.6

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