3+0.75x=15

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Solution for 3+0.75x=15 equation:



3+0.75x=15
We move all terms to the left:
3+0.75x-(15)=0
We add all the numbers together, and all the variables
0.75x-12=0
We move all terms containing x to the left, all other terms to the right
0.75x=12
x=12/0.75
x=16

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