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mrzimanin
@mrzimanin
July 2022
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решите уравнение 1)-6,4y=9,92 2)-8y*(-0,2)=-0,016 3) (7,5-6x)*3=1,5 4) 7(3+x)=2(x-5)+8 5) 1/3x+2 2/5=3 2/3 ( дробь одна третья и 2 целых две пятых) 6) x:12= 1 3/7:6/7 7) 7/8x+3*(2-5/8x)=5
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Lоveless
1) -6,4y=9,92
y=9,92/(-6.4)
y=-1,55
2) -8y*(-0,2)=-0,016
-8y=0,08
y=-0,01
3) (7,5-6x)*3=1,5
7,5-6x=0,5
-6x=-7
x=1,17
4) 7(x+3)=2(x-5)+8
7x+21=2x-10+8
7x-2x=-2-21
5x=-23
x=-4,6
5) 1/3x+2 2/5=3 2/3
1/3x=11/3-12/5
1/3x=55/15-36/15
1/3x=19/15
x=19*3/15
x=3,8
6) x:12=1 3/7:6/7
x:12=10/7*7/6
x:12=5/3
x=5/3*12
x=20
2 votes
Thanks 2
mrzimanin
спаибо
Lоveless
7/8x+3*(2-5/8x)=5
Lоveless
не за что
mrzimanin
ещё раз спасибо
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Answers & Comments
y=9,92/(-6.4)
y=-1,55
2) -8y*(-0,2)=-0,016
-8y=0,08
y=-0,01
3) (7,5-6x)*3=1,5
7,5-6x=0,5
-6x=-7
x=1,17
4) 7(x+3)=2(x-5)+8
7x+21=2x-10+8
7x-2x=-2-21
5x=-23
x=-4,6
5) 1/3x+2 2/5=3 2/3
1/3x=11/3-12/5
1/3x=55/15-36/15
1/3x=19/15
x=19*3/15
x=3,8
6) x:12=1 3/7:6/7
x:12=10/7*7/6
x:12=5/3
x=5/3*12
x=20