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Anonim1336
@Anonim1336
August 2022
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Решите уравнения:
1/2(3x+7)-3/4(2x-2)=3/4(x+1)
5(x-1)+5(3x+2)=7(5x+2)
Пожалуйста, с объяснением.
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eryginamasha
5(x-1)+5(3x+2)=7(5x+2)
5х-5+15х+10=35х+14
5х+15х-35х=14+5-10
-15х=9
х=-15/9
1/2(3x+7)-3/4(2x-2)=3/4(x+1)
3/2х+7/2-3/2х+3/2=3/4х+3/4
3/2х-3/2х-3/4х=-7/2+3/4-3/2
-3/4х=-17/4
х=-17/4:(-3/4)=-17/4*
(-3/4)
х= 17/3
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Answers & Comments
5х-5+15х+10=35х+14
5х+15х-35х=14+5-10
-15х=9
х=-15/9
1/2(3x+7)-3/4(2x-2)=3/4(x+1)
3/2х+7/2-3/2х+3/2=3/4х+3/4
3/2х-3/2х-3/4х=-7/2+3/4-3/2
-3/4х=-17/4
х=-17/4:(-3/4)=-17/4*(-3/4)
х= 17/3