Решите (x+4 5/12)*3=6 1/3 6*(2x+3)-4*(2x-4)=0 - вопрос №4512361362342407769112 от aleksandr250804 15.01.2020 19:18

Question

Математика: Решите (x+4 5/12)*3=6 1/3 6*(2x+3)-4*(2x-4)=0

aleksandr250804 · Answer

(х + 4 5/12) * 3 = 6 1/3х + 4 5/12 = 6 1/3 : 3 = 19/3 * 1/3 = 19/9 = 2 1/9х = 2 1/9 - 4 5/12 = 2 4/36 - 4 15/36 = - (4 15/36 - 2 4/36) = - 2 11/36х = - 2 целых 11/36Проверка: (- 2 11/36 + 4 5/12) * 3 = 6 1/3                   2 1/9 * 3 = 6 1/3                   19/9 * 3 = 57/9 = 6 3/9 = 6 1/3- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6(2х + 3) - 4(2х - 4) = 012х + 18 - 8х + 16 = 012х - 8х = - 18 - 164х = - 34х = - 34 : 4х = - 8,5Проверка:...