Answer:
10x+40
Step-by-step explanation:
Since it isn't an equation, but rather an expression, I assume that the problem is asking you to simplify the terms. Since there is no multiplication or division or exponents in the problem, you can open up the parentheses. 4x+3x+20+3x+20=7x+20+3x+20=10x+20+20=10x+40. Therefore, the answer is 10x+40.
