You can simplify the expression by doing the distributive law of property.
-4(x - 7) would become -4x * 28.
And 3(x + 9) would become 3x + 9
Because the law of distributive property states that a(b + c) = ab + ac
Now let's put back the expression.
-4x + 28 + 3x + 9
Now, let's combine like terms. 28 and 9 are like terms...
Let's add them together. 28 + 9 = 37.
-4x + 37 + 3x
And also, -4x and 3x are like terms. Add them up. -4x + 3x = -x
Now here's the final expression.
-x + 37
