Answer: 4+(3xX)+(3x5)
Step-by-step explanation:
So let's take out the 4 for right now. You're left with 3(x+5) the parenthesis are saying to multiply the 3 with x (3x) and add it to the answer of 3x5 (15). Because you do parenthesis before addition (Parenthesis Exponents Multiplication Division Addition Subtraction) you complete that and add back the 4 in to the problem.