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# Help!!

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Solve for  a.

6(a+3)=18+6a

Solve for  a.

1/5(25−5a)=4−a

Solve for  x.

9x=5x+20

Solve for x.

6x−2/4=x−2

Solve for x.

8/9(54x−36)+2=−3/4(−40+16x)+90x

Gaymer2345  Sep 11, 2017
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6(a+3)=18 + 6a

6a + 18 =  18 + 6a

Since one side equals the other, we have infinite solutions for  "a"

1/5(25−5a) = 4−a

5 - a  =  4 - a       add a to both sides

5  = 4

This is an absurd solution.....thus.....there are no solutions for "a"

9x =  5x+20      subtract 5x from both sides

4x  = 20            divide both sides by 4

x  = 5

I assume this is :

[6x−2] / 4 = x−2     multiply both sides by 4

6x - 2  = 4 (x - 2)

6x - 2  = 4x  - 8      add 2 to both sides, subtract 4x from both sides

2x  = -6               divide both sides by 2

x  = -3

8/9(54x−36)+2=−3/4(−40+16x)+90x

48x - 32 + 2   =  30  -  12x  + 90x

48x - 30  =  30 + 78x           add 30 to both sides, subtract 78x from both sides

-30x  = 60          divide both sides by -30

x  = -2

CPhill  Sep 11, 2017

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