14(2х-3)-5(х+4)=2(3х+5)+5х помогите
14(2x - 3) - 5 (x + 4) = 2(3x + 5) + 5x 28x - 42 - 5x - 20 = 6x + 10 + 5x 28x - 5x - 6x - 5x = 10 + 42 + 20 12x = 72 x = 6
28х-42-5х-20=6х+10+5х 28х-5х-6х-5х=10+42+20 12х=72 х=72:12 х=6 Проверка: 14(2·6-3)-5(6+4)=2(3·6+5)+5·6 14·9-50=2·23+30 76=76