1)уравнение: 3x+7x+18=178

1)уравнение: (3724+p):54=69

1) 3х+7х + 18 => 10х + 1810х + 18 = 178 => 10x = 178-18 = 160x = 160/10 = 162) (3724+p):54 = 69 => 3724+p = 69*54 = 3726p = 3726-3724 = 2