1) 10х + 4 = 7х + 1910х - 7х = 19 - 43х = 15х = 15 / 3х = 52) 9 - 6х = 8х + 7-6х - 8х = 7 - 9-14х = -2х = -2 / -14х = 73) 5(х+2) = 15х + 10 = 15х = 1 - 10х = -9 / 5х = -1 4/5 = -1,84) 7(2х + 3) = 12х + 1114х + 21 = 12х + 1114х - 12х = 11 - 212х = - 10х = -10 / 2х = -55) 7(-4 + х) = 3х - 4- 28 + 7х = 3х - 47х - 3х = -4 + 284х = 24х = 24 / 4х = 66) 2(х + 7) - 9 = -2х2х + 14 - 9 = -2х2х + 2х = 9 - 144х = -5х = -5 / 4х = -1,257) -3 (5 - х) = 11 + 2х-15 + 3х = 11 + 2х3х - 2х = 11+15х = 268) 5 - 2(3 + х) = 8 - 5х5 - 6 - 2х = 8 - 5х-2х + 5х = 8 - 5 + 63х = 9х = 9 / 3х = 39) 2х - 3 + 2(х - 1) = 3х - 112х - 3 + 2х - 2 = 3х - 114х - 3х = -11 + 3 + 2х = -610) 9х - 7 (-10 - 3х) = х - 179х + 70 + 21х = х - 179х + 21х - х = -17 - 7029х = -87х = -87 / 29х = -3Прости, два последних не сделала, так как забыла эти темы, увы.