7a
none
3a+5b+7a=
-7a + 3a = -4a
(7a=3)=(-a-5)=16
It is: 2a+5a = 7a when simplified
9a-a = 19+7a 8a = 19+7a 8a - 7a = 19 + 7a - 7a 1a = 19 a = 19
7a + 4 = 5a + 7 7a = 5a + 3 2a = 3 a = 3/2
a + 3a - 2 + 3a. Add the a + 3a + 3a = 7a. You can't combine the -2 & 7a so the solution is: 7a - 2.
555
7a
7A + 3