ПОМОГИТЕ!!!!! ПОЖАЛУЙСТА!!!!!! ДАЮ 20 С ЧЕМ-ТО БАЛЛОВ.
Составь и реши уравнение.
1) (20+х) *10 = 700
(20+х) * 10=700
(20+х) =_
х = ___________
х=___
2) 2 * (х - 40) = 60
2 * (х-40) = 60
(х-40) = _
х = ___________
х = __
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