Solve 7w – 3r = 15 for r. Show your work.
2 answers:
What's w?
Well without W, we just have to trial and error.
R could be 2.
7w - 3r = 15
7w - 3(2) = 15
7w - 6 = 15
7w = 21
/7 /7
w = 3
So if W = 3, R could be 2.
7w - 3r = 15
7w - 3(2) = 15
7w - 6 = 15
7w = 21
/7 /7
<span> w = 3</span>
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