3a+5b+7a=
a + 3a - 2 + 3a. Add the a + 3a + 3a = 7a. You can't combine the -2 & 7a so the solution is: 7a - 2.
7a
4a + 3a = (4 + 3)a = 7a
10a+7b undefined variables cannot be determined
3a - 2b
7a-2b
It is: 7a+1 when simplified
It is: 3a+7a = 10a simplified
7a minus 2, if "3a-2" means 3a minus 2. 3a plus 1 and 1-3rd in parenthesis times 3a, if "3a-2" means 3a squared. a plus 3a squared plus 3a = 1-3rd times 3a plus 3a times 3a plus 1 times 3a = 3a plus 1 and 1-3rd in parenthesis times 3a
7a-17 = 4a+1 7a-4a = 1+17 3a = 18 a = 6
4a+3a-4 = 10 4a+3a = 10+4 7a = 14 a = 2