2/3+a=10 What's "a"?
15 = a
No, a=9 1/3
PROOF: 2/3+a=10
Subtract 2/3 from both sides.
\({2\over3} - {2\over3}+a=10 -{2\over3}\)
\(a=9{1\over3}\)
+5265 
