4a-(8a-5b)-(-5a+2b)+4
To solve this expression, we can simplify step by step:
4a - (8a - 5b) - (-5a + 2b) + 4
First, let's solve the expressions within parentheses:
4a - (8a - 5b) becomes 4a - 8a + 5b
Next, we need to distribute the negative sign that multiplies the second set of parentheses:
-(-5a + 2b) becomes +5a - 2b
Now, the expression becomes:
4a - 8a + 5b + 5a - 2b + 4
Combine the like terms:
(-4a + 5a) + (5b - 2b) + 4
a + 3b + 4
So, the simplified expression is a + 3b + 4.