An expression consists of terms that are combined using addition, subtraction, multiplication and division.
\(\begin{array}{llll}\text { Numeric expressions: } & 7-5 ; & 100 \div 5+1 ; & 6 \times 10-2+5 \\ \text { Algebraic expressions: } & 7 x-5 ; & \frac{100 p}{3}+1 ; & 7 x^{2}+3 x-x-2\end{array}\)