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I am trying to solve for x I believe so but I’m so confused with this question -11x+21=-3x-6

User Zrax
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1 Answer

3 votes

Answer as a fraction: x = 27/8

Answer in decimal form: x = 3.375

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Work Shown:

-11x+21=-3x-6

-11x=-3x-6-21

-11x+3x = -6-21

-8x = -27

x = -27/(-8)

x = 27/8 is the answer as a fraction

x = 3.375 is the answer in decimal form

Step-by-step explanation:

The idea is to get x by itself. In step 2, I subtracted 21 from both sides. In the third step, I added 3x to both sides. This will mean the x terms are on one side, and the non x terms are on the other. After combining like terms, I divided both sides by -8 to fully isolate x.

Side note: The improper fraction 27/8 is equivalent to the mixed number 3 & 3/8

User JCLL
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