SOLUTION: 3x/4-9=-6 3x/4 is a fraction. not a division sign. I tried a similar problem which was 2x/3-5=7 and the book says the answer is 18, but i got 13. I divided 3 on both sides, the

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: 3x/4-9=-6 3x/4 is a fraction. not a division sign. I tried a similar problem which was 2x/3-5=7 and the book says the answer is 18, but i got 13. I divided 3 on both sides, the      Log On


   

Question 775841: 3x/4-9=-6
3x/4 is a fraction. not a division sign.
I tried a similar problem which was 2x/3-5=7 and the book says the answer is 18, but i got 13. I divided 3 on both sides, then cancelled the 3 on the side with the variable and ended up with 2x-5=21. I'm not sure what I did wrong.
Answer by MathTherapy(10552) About Me  (Show Source):
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3x/4-9=-6
3x/4 is a fraction. not a division sign.
I tried a similar problem which was 2x/3-5=7 and the book says the answer is 18, but i got 13. I divided 3 on both sides, then cancelled the 3 on the side with the variable and ended up with 2x-5=21. I'm not sure what I did wrong.

2x%2F3+-+5+=+7

2x - 15 = 21 ------ Multiplying by LCD, 3

2x = 21 + 15

2x = 36

x = 36%2F2, or highlight_green%2818%29

You can do the check!!

You can now try to solve the 1st equation: 3x%2F4+-+9+=+-+6

You then do a check!!

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