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vshivckovau
@vshivckovau
July 2022
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Решите уравнения:
1)8(0,7х-4)=2(0,2х-3)-39
2)2,8-3,2а=-4,8-5,1а
3)8,5х-2,15х=3,05х-9,5
4)1,2(3в+5)=2(2,4в-3,6)
5)-3(2,1х-4)-4,2=1,2(-5х+0,5)
СРОЧНО!!!!!
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tanichkinaiv
1) 5.6x-32=0.4x-6-39
5.6x-0.4x=32-6-39
5.2x= -13
x=-13:5.2
x=-2.5
2) 5.1a-3.2a=-4.8-2.8
1.9a=-7.6
a=-7.6:1.9
a=4
3) 8.5x-2.15x-3.05x=-9.5
3.3x=-9.5
x=-9.5:3.3
x=-2.88
4) 3.6b+6=4.8b-7.2
3.6b-4.8b=-6-7.2
-1.2b= - 13.2
b=-13.2:(-1.2)
b=11
5) -6.3x+12-4.2=-6x+0.6
-6.3x+6x=4.2+0.6-12
-0.3x=-7.2
x=-7.2:(-0.3)
x=24
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Answers & Comments
5.6x-0.4x=32-6-39
5.2x= -13
x=-13:5.2
x=-2.5
2) 5.1a-3.2a=-4.8-2.8
1.9a=-7.6
a=-7.6:1.9
a=4
3) 8.5x-2.15x-3.05x=-9.5
3.3x=-9.5
x=-9.5:3.3
x=-2.88
4) 3.6b+6=4.8b-7.2
3.6b-4.8b=-6-7.2
-1.2b= - 13.2
b=-13.2:(-1.2)
b=11
5) -6.3x+12-4.2=-6x+0.6
-6.3x+6x=4.2+0.6-12
-0.3x=-7.2
x=-7.2:(-0.3)
x=24