Evaluate
6
+
4
a
+
b
3
6+
a
4
​ +
3
b
​ 6, plus, start fraction, 4, divided by, a, end fraction, plus, start fraction, b, divided by, 3, end fraction when
a
=
4
a=4a, equals, 4 and
b
=
3
b=3b, equals, 3.