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piskulin
@piskulin
July 2022
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Помогите пожалуйста решить уравнения -3х+2=5х-15; 2х+7=-19; 4х+5=-2х-5; -4х+7=5х+1; 2х-(4-5х)=-(6-3х). Срочно плиз.
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yurtaevanastya1
1)-3х+2=5х-15;
-3х+2-5х+15=0;
-8х=-17\(-8)
х=2,125
2)2х+7=-19;
2х=-2\2;
х=-1
3)4х+5=-2х-5;
6х=-10\6
х=-1,666667
4)-4х+7=5х+1;
-9х=-6\(-9)
х=0,6666667
5)2х-(4-5х)=-(6-3х);
2х-4+5х=-6+3х;
7х-4+6-3х=0;
4х=-2\4
х=-0,5
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Answers & Comments
-3х+2-5х+15=0;
-8х=-17\(-8)
х=2,125
2)2х+7=-19;
2х=-2\2;
х=-1
3)4х+5=-2х-5;
6х=-10\6
х=-1,666667
4)-4х+7=5х+1;
-9х=-6\(-9)
х=0,6666667
5)2х-(4-5х)=-(6-3х);
2х-4+5х=-6+3х;
7х-4+6-3х=0;
4х=-2\4
х=-0,5