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Solve: 1. 12 + 2 ( x - 1 ) = 4x - 15 - 2x
2. 7 ( x + 3 ) - 1 = 5 ( x + 4 ) + 10
3. ( 4x - x ) 6 + 2 = 11 ( x + 3 ) + 10
4. 3/8 ( 2x - 8 ) = 1/4x + 9
please show work

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DALAU

Answer:

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david_201822

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prishagupta035

(1)

12+2(x-1)=4x-15-2x

12+2x-2=4x-15-2x

12-2=4x-15

10+15=4x

25=4x

x=25÷4

x= 6.25

(2)

7(x+3)-1=5(x+4)+10

7x+21-1=5x+20+10

7x+20=5x+30

7x-5x=30-20

2x=10

x=10÷2

x=5

(3)

(4x-x)6+2=11(x+3)+10

24x-6x+2=11x+33+10

18x+2=11x+43

18x-11x=43-2

7x=41

x=41÷7

x=5.85

or

x=6

(4)

3/8(2x-8)=1/4x+9

3/4x-3=1/4x+9

3/4x-1/4x=9+3

1/2x=12

x=12(2)

x=24

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