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Автор - Ретранслятор

8х+7х+15=420, помогите решить.

Ответ

Автор - alenapresnova94
8х+7х+15 = 420
15х+15 = 420
15х = 420-15
15х = 405
х = 405:15
х = 27

Ответ

Автор - alma86
8х+7х+15=420

8х+7х=420-15

15х=405

х=405:15

х=27

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