Simplify the expression 3 (13x+5)-4x+4. What is the coefficient of x in the simplified expression?
To simplify the expression, we need to distribute the 3 to the terms inside the parentheses:
3 (13x+5) - 4x + 4 = 39x + 15 - 4x + 4.
Combining like terms, we have 39x - 4x + 15 + 4 = 35x + 19.
The coefficient of x in the simplified expression is 35.