Решите уравнение 1) 5x+6=8x-3 2)-2x+4=-x-1 3)1/2x-1/7 =1/14-1/5x 4)3 целых 1/2-x = 2...

Question

Решите уравнение
1) 5x+6=8x-3
2)-2x+4=-x-1
3)1/2x-1/7 =1/14-1/5x
4)3 целых 1/2-x = 2 целых 1/2 - 1/2x
5)18x-4=10x
6)3x=8x
7)-10x+5=-x-40
8)8x=5x-4
9)32-18x=-8+22x
10)-6x-3x=45

Comments

6)3x=8x

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3x-8x=0, -5x=0, x=0/-5, x=0

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7)-10x+5=-x-40

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-10x+x=-40-5, -9x=-45, x=5

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8)8x=5x-4

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8x-5x=-4, 3x=-4, x=-4/3

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9)32-18x=-8+22x

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-18x-22x=-8-32, -40x=-40, x=1

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10)-6x-3x=45

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-9x=45, x=-5

Answer 1

1)5x+6=8x-3
5x-8x=-3-6
-3x=-9
x=3
2)-2x+4=-x-1
-2x+x=-1-4
-x=-5
x=5
3)1/2x-1/7 =1/14-1/5x
1/2x+1/5x=1/14+1/7
7/10x=3/14
x=3/14:7/10
x=30/98=5/16
4)3 целых 1/2-x = 2 целых 1/2 - 1/2x
7/2-x=5/2-1/2x
-x+1/2x=5/2-7/2
-x=-2/2
-x=-1
x=1

5)18x-4=10x18x-10x=4
 8x=4
 x=4/8
 x=0.5
6)3x=8x3x-8x=0
 -5x=0
 x=0/-5
 x=0
7)-10x+5=-x-40-10x+x=-40-5
 -9x=-45
 x=5
8)8x=5x-48x-5x=-4
 3x=-4
x=-4/3
9)32-18x=-8+22x-18x-22x=-8-32
 -40x=-40
 x=1
10)-6x-3x=45-9x=45
 x=-5