3y-4y=9

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Solution for 3y-4y=9 equation:



3y-4y=9
We move all terms to the left:
3y-4y-(9)=0
We add all the numbers together, and all the variables
-1y-9=0
We move all terms containing y to the left, all other terms to the right
-y=9
y=9/-1
y=-9

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