3,5*(x+2,4)=7*(x-6,8)

Question

3,5*(x+2,4)=7*(x-6,8)

Comments

3.5x+8.4=7x-47.6

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3.5x-7x=-8.4-47.6

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-3.5x=-39.2

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x=11.2

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ошибся

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-3.5x=-56

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x=16

Answer 1

3,5×(х+2,4) = 7×(х-6,8)
3,5х+8,4 = 7х-47,6
3,5х-7х = -47,6-8,4
-3,5х = -56
х = 56 ÷ 3,5
х =16
Проверка
3,5×(16+2,4) = 7×(16-6,8)
3,5×18,4 = 7×9,2
64,4=64,4

Answer 2

3,5*(х+2,4)=7*(х-6,8)
3,5х+8,4=7х-47,6
3,5х-7х=-47,6-8,4
-3,5х=-56
х=56/3,5
х=16