Identify the operations (addition, substraction, 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 , , 5z


(c) 2y + 17, 2y – 17


(d) 7m, - 7m + 3, -7m – 3

(a) From the above given expression it is clear that:


Firstly,


Addition, as 1 is added to z


Then,


Subtraction, as 1 is subtacted from z


Then,


Addition, as 17 is added to y


At last,


Subtraction, as 17 is subtacted from y


(b) From the above given expression it is clear that:


Firstly,


Multiplication, as y is multiplied with 17


Then,


Division, as y is divided by 17


Then,


Multiplication as z is multiplied with 5


(c) From the above given expression it is clear that:


Firstly,


There is multiplication and addition as:


y is multiplied with 2 and 17 is added to the result


Then,


There is multiplication and subtraction as:


y is multiplied with 2 and 17 is subtracted from the result


(d) From the above given expression it is clear that:


Firstly,


Multiplication, as m is multiplied with 7


Then,


There is multiplication and addition as m is multiplied with -7 and 3 is added to the result


At last,


There is multiplication ans subtraction as:


m is multiplied with -7 and 3 is subtracted from the result


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