3x+4.2=8.7

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Solution for 3x+4.2=8.7 equation:



3x+4.2=8.7
We move all terms to the left:
3x+4.2-(8.7)=0
We add all the numbers together, and all the variables
3x-4.5=0
We move all terms containing x to the left, all other terms to the right
3x=4.5
x=4.5/3
x=1+1/2

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