Легкий пример!
486:(5х+2)=18
18( 5x + 2) = 486
90x + 36 = 486
90x = 486 - 36
90x = 450
x = 450/90
x = 5
Оцени ответ
18( 5x + 2) = 486
90x + 36 = 486
90x = 486 - 36
90x = 450
x = 450/90
x = 5