6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b
11a+7b-(3b-2a)
It is 20a - 5b - 9.
6a+7b. This cannot be simplified anymore unless you know a or b.
-58
7b + 16 = 5b + 247b - 5b = 24 - 162b = 8b = 4
11a+7b-(3b-2a)
9a + 7b *remember to look and understand the letters!*
6a+7b
(6a + 7b)(6a - 7b)
2a + 7b = -13a - 7b = -5The system of equations can be solved by elimination:2a + 3a = -65a = -6a = -6/5substitute the value of a in any of the two original equations to find the value of b:2(-6/5) + 7b = -1-12/5 + 1 = -7b-7/5 = -7bb= 1/5
2a+2a-7b+7b =4a
It is 20a - 5b - 9.
6a+7b. This cannot be simplified anymore unless you know a or b.
-58
The given expression can be simplified to: 3b-a
7b + 16 = 5b + 247b - 5b = 24 - 162b = 8b = 4
If: 6b+21 = 7b-21 Then: 6b-7b = -21-21 And: -b = -42 So: b = 42