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)
(c)
(d)
(a)
z+1 z added to 1 (addition)
z-1 1 subtracted from z (subtraction)
y+17 y added to 17 (addition)
y-17 17 subtracted from y (subtraction)
(b)
17y 17 multiplied by y (multiplication)
y divided by 17 (division)
5z 5 multiplied by z (multiplication)
(c)
2y+17 2 multiplied by y and 17 added to it (multiplication and addition)
2y–17 2 multiplied by y and 17 subtracted from it (multiplication and subtraction)
(d)
7m 7 multiplied by m (multiplication)
–7m+3 -7 multiplied by m and 3 added to the product (multiplication and addition)
–7m–3$$ -7 multiplied by m and 3 subtracted from the product (multiplication and subtraction)
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