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Ilia_Sergeevich [38]
3 years ago
12

3x+1/5y=7 solve for y

Mathematics
1 answer:
Vladimir79 [104]3 years ago
5 0
Hello!

First, let's write the problem.
3x+\frac{1}{5}y=7
Subtract 3x from both sides.
3x+\frac{1}{5}y-3x=7-3x
\frac{1}{5}y=7-3x
The opposite of division is multiplication, so we are going to multiply in order to undo the fraction.
5\cdot \frac{1}{5}y=5\cdot \:7-5\cdot \:3x

Our final answer would be, 
y=35-15x

Thanks!
-TetraFish
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