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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)   $7m,-7m+3,-7m-3$

Answers (1)

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(a) $z+1\rightarrow addition$ $y-17\rightarrow subtraction$

$z-1\rightarrow subtraction$ $y+17\rightarrow addition$

(b) $17y\rightarrow multiplication$ $\frac{y}{17}\rightarrow division$

$5z\rightarrow multiplication$

(c) $2y+17\rightarrow multiplication \, \, and\, \, \, addition$

$2y-17\rightarrow multiplication \, \, and\, \, \, subtraction$

(d) $7m\rightarrow multiplication$

$-7m+3\rightarrow multiplication\, \, and\, \, addition$

$-7m-3\rightarrow multiplication\, \, and\, \, subtraction$

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