4a + 7b + 3a – 2b + 2a ; a = −5, b = 3

Sure, let's solve this step by step:

First, let's simplify the expression by combining like terms:

4a + 3a + 2a + 7b - 2b

This simplifies to:

9a + 5b

Now, let's substitute a = -5 and b = 3 into the equation:

9(-5) + 5(3)

This simplifies to:

-45 + 15

Finally, we calculate the result:

-45 + 15 = -30