21х-35=14 ⅔х+½=-х 4х-1=2•(х+3) 3•(3х-2)=5•(2х - вопрос №21351441233325210593052 от Alexandra0606 21.07.2021 11:08

Question

Математика: 21х-35=14 ⅔х+½=-х 4х-1=2•(х+3) 3•(3х-2)=5•(2х

Alexandra0606 · Answer

2) 21х- 35 = 14х21х - 14х = 357х = 35х = 53) 2/3 • х + 1/2 = -хх + 2/3 • х = -1/23х/3 + 2х/3 = -1/25х/3 = -1/2х= -1/2 • 3/5х = -0,34) 4х - 1 = 2(х + 3)4х - 1 = 2х + 64х - 2х = 6 + 12х = 7х = 3,55) 3(3х - 2) = 5(2х - 1)9х - 6 = 10х - 59х - 10х = 6 - 5-х = 1х = -11 2/3 • х - 4/9 = 2 5/6 - 1/25х/3 - 4/9 = 17/6 - 1/25х/3 = 17/6 - 1/2 + 4/95х/3 = 51/18 - 9/18 + 8/185х/3 = 50/18х = 50/18 • 3/5х = 10/6 х = 1 2/3(4х+1)/2 - (3х-2)/5 = 315(4х+1)/30 - 6(3х-2)/30 = 30•3/3015(4х+1) - 6(3х-2) = 9060х + 15 - 18х...