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

User Rzlvmp
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1 Answer

4 votes
Hello!

First, let's write the problem.

3x+(1)/(5)y=7
Subtract 3x from both sides.

3x+(1)/(5)y-3x=7-3x

(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 (1)/(5)y=5\cdot \:7-5\cdot \:3x

Our final answer would be,

y=35-15x

Thanks!
-TetraFish
User Pranav Wadhwa
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8.6k points