РЕШИТЕ УРАВНЕНИЯ 3-1\2Х=5 5Х-(1\2Х+9)=18 4.5(Х-1)-2.3(Х+2)=2.1 7(1-2Х)=4+3(Х-1)
Х-3.5=-3.5*0.7

3- 1/2 х=51/2 х=3-51/2 х= -2х= -2:1/,2= -2*2х= - 45х- (1/2 х+9)=185х-1/2 х -9=184 1/2 х=27х= 27 : 4 1/2х=27 * 2/9х=64,5(х-1)-2,3(х+2)=2,14,5х-4,5-2,3х-4,6=2,12,2х= -7х=7 : 2,2х=3 2/11=3,(18)7(1-2х)=4+3(х-1)7-14х=4+3х-33х+14х=7-117х=6х=6/17х-3,5= -3,5*0,7х-3,5= -2,45х=3-2,45х=0,55