8х-3=10х-12 6х+5=-х-9 1,3x-11=0,8+5 8x+5=119+(7+3x) 6-3*(x+1)=7-x

Question

8х-3=10х-12
6х+5=-х-9
1,3x-11=0,8+5
8x+5=119+(7+3x)
6-3*(x+1)=7-x

Comments

8х-3=10х-12. 8х-10х=-12+3. -2х=-9. х=4,5

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6х+5=-х-9. 6х+х=-9-5. 7х=-14. х=-2

Answer 1

8х-3=10х-12
8х-10х=-12+3
-2х= -9
х= -9 :(-2)
х=4,5

6х+5=-х-9
6х-х= -9-5
5х= -14
х= -14: 5
х= -2,8 

1,3x-11=0,8+5
1,3х=0,8+5+11
1,3х= 16,8
х=16,8 :1,3
х=12,9

8x+5=119+(7+3x)
8х+5=119+7+3х
8х-3х=119+7-5
5х=121
х=121 :5
х=24,2

6-3*(x+1)=7-x
6-3х-3=7-х
-3х+х=7-6+3
-2х=4
х=4 : (-2)
х=-2