4.2g+9=1.2g+21

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Solution for 4.2g+9=1.2g+21 equation:



4.2g+9=1.2g+21
We move all terms to the left:
4.2g+9-(1.2g+21)=0
We get rid of parentheses
4.2g-1.2g-21+9=0
We add all the numbers together, and all the variables
3g-12=0
We move all terms containing g to the left, all other terms to the right
3g=12
g=12/3
g=4

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