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Q.3 Identify the operations (addition, subtraction, division, multiplication) in forming the following expressions and tell how the expressions have been formed.
(a) z + 1, z – 1, y + 17, y – 17
(b) 17y, \(\frac{y}{17} \) , 5z
(c) 2y + 17, 2y – 17
(d) 7m, -7m + 3, -7m – 3
Answer :

(a) z + 1 \(\rightarrow \) Addition, z ? 1 \(\rightarrow \) Subtraction
y + 17 \(\rightarrow \) Addition , y ? 17 \(\rightarrow \) Subtraction
(b) 17 y \(\rightarrow \) Multiplication
\(\frac{y}{17} \) \(\rightarrow \) Division
5z \(\rightarrow \) Multiplication
(c) 2y +17 \(\rightarrow \) Multiplication and Addition
2y ? 17 \(\rightarrow \) Multiplication and Subtraction
(d) 7m \(\rightarrow \) Multiplication
?7m + m \(\rightarrow \) Multiplication and Addition
?7m? 3 \(\rightarrow \) Multiplication and Subtraction