9+3y=4.2-0.2y

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Solution for 9+3y=4.2-0.2y equation:



9+3y=4.2-0.2y
We move all terms to the left:
9+3y-(4.2-0.2y)=0
We add all the numbers together, and all the variables
3y-(-0.2y+4.2)+9=0
We get rid of parentheses
3y+0.2y-4.2+9=0
We add all the numbers together, and all the variables
3.2y+4.8=0
We move all terms containing y to the left, all other terms to the right
3.2y=-4.8
y=-4.8/3.2
y=-1+1/2

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