a. $\quad 3$ b. $\quad 1$ c. $\quad 6$ d. $\quad$ There are like terms: $ x$ and $7x$.
Work Step by Step
a. The terms of an algebraic expressions are those parts separated by addition. It can be a number, a variable, or a number times one or more variables. In $ x+6+7x$, three terms are separated by addition b. The numerical part of a term is called its coefficient. If a term is written without a coefficient, the coefficient is understood to be 1 The numerical coefficient of $x$ is 1. c. A term that consists of just a number is called a constant term. In $x+6+7x$, the constant term is $6$. d. The parts of each term that are multiplied are called the factors of the term Like terms are terms that have exactly the same variable factors. Terms $x$ and $7x$ have identical variable factors.