Прошу: ( решите уравнения: 1)5/6*(3-2х)=х-1 1/2 2)5 1/2*(х+1)=1/2*(2-х)= 3) 1/2*(4-3 1/2х)=1 1/4х-1/2 4) 4(3-2х)+24=2(3-2х) 5)0,3*(5х-7)=3*(0,2х+3,2) 6)5-(1 1/2х+1/3)*6=2 1/3х-5 1/2
297
323
Ответы на вопрос:
1) 5/2-5/3х=х-3/2 х+5/3х=5/2+3/2 8/3х=8/2 х=8/2: 8/3=8/2*3/8=3/2 х=1,5 2) 5.1/2х+5.1/2=1-1/2х 5.1/2х+1/2х=1-5.1/2 6х=-4.1/2 х=-9/2: 6=-9/2*1/6=-3/4 х=-0,75 3) 2-1/2*7/2х=5/4х-1/2 5/4х+7/4х=2+1/2 12/4х=2.1/2 3х=5/2 х=5/2: 3=5/6 4) 12-8х+24=6-4х -8х+4х=6-12-24 -4х=--30 х=-30/(-4) х=15/2=7,5 5) 1,5х-2,1=0,6х+9,6 1,5х-0,6х=9,6+2,1 0,9х=11,7 х=11,7: 0,9=13 6) 5-3/2*6х+2=2.1/3х-5.1/2 -9х-2.1/3х=-5.1/2-5-2 -11.1/3х=-12.1/2 х=25/2: 34/3=25/2*3/34=75/68 х=1.7/68
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