2: (3-2x)=1 3(5x+2)=12 21(x-3)=12 21(3-x)=12 21x-3=12 - вопрос №2321352122131221312213122137731143122119191098 от helenkarchevskp08ll5 09.11.2022 03:00

Question

Математика: 2: (3-2x)=1 3(5x+2)=12 21(x-3)=12 21(3-x)=12 21x-3=12 21: (x-3)=7 7(3x+1)=-14 3x+12-2x=11 5x-2=13 5(x-2)=15

helenkarchevskp08ll5 · Answer

2:(3-2x) = 12 = 3-2х2х = 3-22х=1х = 1:2х = 0,53(5x+2)=1215х + 6 = 1215х = 12 - 615х = 6х = 6:15х = 0,421(x-3)=1221х - 63 =1221х = 12+6321х = 75х = 75:21х =15/7 = 2 1/721(3-x)=1263 - 21х = 12-21х = 12 - 63-21х = -51х = -51 : (-21)х = 17/7 = 2 3/721x-3=1221х = 12 + 321х = 15х = 15:21х = 5/721:(x-3)=721 = 7•(х-3)7х - 21 = 217х = 21 +217х = 42х = 42:7х = 67(3x+1)=-1421х + 7 = -1421х = -14 - 721х = - 21х = -21 : 21х = -13x+12-2x=113х - 2х = 11 - 12х = -15x-2=135х = 13 + 25х = 15х = 15:5х = 35(x-2)=155х...