2a + 10 + 5a - 2 = (2a + 5a) + (10 - 2) = 7a + 8
5a + 3 + (2a - 2) + a= 5a + 3 + 2a - 2 + a= 8a + 1
2a+5a+9a = 16a
If you mean: (2a+9)(5a-6) then it is 10a^2+33a-54
9a +8 -2a -3 -5a = 2a +5
2a - 5a = -3a
2a-8+4=45-5a 2a-4=45-5a 2a-4+4=45+4-5a 2a+5a=49-5a+5a 7a=49 / by 7 = A=7
2a + 3a = 5a
Add them together: 2a+5a = 7a
2a + 10 + 5a - 2 = (2a + 5a) + (10 - 2) = 7a + 8
5a + 3 + (2a - 2) + a= 5a + 3 + 2a - 2 + a= 8a + 1
assuming 5a-a-2a-18=0 2a-18=0 2a=18 and thus a=9
9a +8 -2a -3 -5a = 2a +5
2a + 5a + 3a = 10a
2a+5a+9a = 16a
2a + 11a - 5a = 8a
5a-20+2a = 6a-11 5a+2a-6a = 20-11 1a = 9 a = 9