depends what 'a' =
p=b+3a+c p-3a-c=b+3a-3a+c-c p-3a-c=b b=p-3a-c
If a + b = 6, what is the value of 3a + 3b?
3a x 2a =24
a + 3a + 5a = 180 9a =180 a = 20
2a + 3a + 4 = 5a + 4
a + a + a - 2a = 3a - 2a = a
1
3.5
-21 = 9a - 15 - 3a -6 = 6a -1 = a
36 -20 = 16
a = 3