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диас200
@диас200
July 2022
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jekadva
1)избавимся от дробей умножив уравнение на 15
4-7x+5*(1-x)=4*15 -3(2x+1)
4-7x+5-5x=60-6x-3
9-12x=57-6x
-12x+6x=57-9
-6x=48
x=-48:6
x= -8
=============
2)умножим на 6
10-y+2*(3y+8)=3*(y+6)
10-y+6y+16=3y+18
26+5y=3y+18
5y-3y=18-26
2y=-8
y=-8:2
y=-4
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диас200
я не то отправил
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Answers & Comments
4-7x+5*(1-x)=4*15 -3(2x+1)
4-7x+5-5x=60-6x-3
9-12x=57-6x
-12x+6x=57-9
-6x=48
x=-48:6
x= -8
=============
2)умножим на 6
10-y+2*(3y+8)=3*(y+6)
10-y+6y+16=3y+18
26+5y=3y+18
5y-3y=18-26
2y=-8
y=-8:2
y=-4