-43х - х + 124х - 50х = 124х - (43х + х + 50х) = 124х - 94х = 30х
Ответ: 30х.
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-43х - х + 124х - 50х = 124х - (43х + х + 50х) = 124х - 94х = 30х
Ответ: 30х.