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1/3(9x+27)-4=1/2(2x+54)

2 Answers

3 votes

(1)/(3)(9x+27)-4= (1)/(2)(2x+54) \\\\(1)/(3) \cdot 9x+(1)/(3) \cdot 27 -4= (1)/(2) \cdot 2x+(1)/(2) \cdot54 \\\\=3x+9-4=x+27\\ \\3x+5=x+27\ \ |\ subtract\ x \ and \ 5\ to\ both\ \\\\3x-x+5-5=x-x+27-5\\\\2x=22 \ \ | \ divide \ both \ sides\ by\ 2 \\\\x=11
User MadsTheMan
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8.7k points
2 votes
First you need to distribute to everything in the parentheses.
3x+9-4=1x+27
Combine like terms
3x+5=x+27
isolate variable
3x+5=x+27
-x -x
2x+5=27
Whatever you do to one side do to the other so I subtract x from both sides. then you must subtract 5 from both sides

2x+5=27
-5 -5
2x=22
divide by 2
2x=22
/2 /2
x=11
Hope that helped
User Grank
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8.4k points