Ответы на вопрос:
25 - 7 + 2х = 5х 2х - 5х = - 25 + 7 - 3х = - 18 х = 6 6х - 27 = 5х - 20 6х - 5х = 27 - 20 х = 7 5 -3х = 2х - 8 -3х - 2х = - 8 -5 - 5х = - 13 х = 2,6 21 - 14х = 15 - 15х -14х + 15х = - 21 + 15 х = - 6 2х + 40 = х + 14 2х - х = - 40 + 14 х = - 26 7х - 3 - 2х = х + 9 7х - 2х - х = 9 + 3 4х = 12 х = 3
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