What is the value of g

-5+7g=3g+9

+5       -3g       First we move the 5 over to the other side by adding 5. And we subtract -3g to cancel the 3g.

4g=14    Here we divide both sides by 4 to find g

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4     4

So then we get g= 3.5

-5+7g=3g+9, 7g-3g=14, 4g=14, g=3.5.