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AngeI:
The first step is correct
AngeI:
a/3 can also be put as 1/3a
AngeI:
It makes it easier
Cupcake123456:
so instead of subtracting 3 i do what?
AngeI:
15=1/3a-2
Subtract 2 from both sides
17=1/3a
Then you would have to multiple both sides by the opposite of 1/3 which is 3/1 or just 3
17*3=1/3a*3
51=a
a=51
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Cupcake123456:
Ohhh so i was backwards
Cupcake123456:
but my paper clearly has 51a
AngeI:
I didnt even look at the final step, but you said a=15 so
AngeI:
Also it would always be a=51 not 51=a
You can get marked wrong for that, so at least you got something out of this