20a2b2
(5a - 4b) + (2c - 3b - 6c) + a =5a - 4b + 2c - 3b - 6c + a =(5a + a) + (-4b - 3b) + (2c - 6c) =[ 6a - 7b - 4c ].
2a + 4b
5a + 4b - 3a =(5a - 3a) + 4b =2a + 4b =2 (a + 2b)
-2a plus 3b
2a
No
(5a - 4b) + (2c - 3b - 6c) + a =5a - 4b + 2c - 3b - 6c + a =(5a + a) + (-4b - 3b) + (2c - 6c) =[ 6a - 7b - 4c ].
2a-6a-a=b+4b-4b -5a=5b-4b -5a=1b a=-5 b=1
2a + 4b
6a+7b
5a + 4b - 3a =(5a - 3a) + 4b =2a + 4b =2 (a + 2b)
6+7a+6b
-2a plus 3b
2a
12a + 6b + 6c = 6(2a + b + c)
6a+7b. This cannot be simplified anymore unless you know a or b.
A level 5a is higher. This is how it works: n 1c 1b 1a 2c 2b 2a 3c 3b 3a 4c 4b 4a 5c 5b 5a ect. Student from BGP. N.S.S