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+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
To solve this system of equations, you can use the method of elimination. First, multiply the first equation by 3 and the second equation by 2 to make the coefficients of 'a' the same. This gives you 6a + 21b = -3 and 6a - 14b = -10. Subtract the second equation from the first to eliminate 'a', resulting in 35b = 7. Dividing by 35 gives you b = 0.2. Substitute b back into one of the original equations to solve for 'a', yielding a = -2.
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