Question

Write algebraic expressions in the following cases using variables, constants and arithmetic operations:-
a) Total cost x pens at Rs.45 per pen and y pencils at Rs.7 per pencil
b) The sum of a and b subtracted from 5
c) Subtraction of y from three times x​

Answer 1

Answer:

a)Rs 45x + Rs 7y

b)5-(a+b)

c)3x-y

Answer 2

Answer:

a.) Rs.45x is the total cost of x pens.

Rs. 7y is the total cost of y pencils.

b.) 5 - ( a + b ) is the equation.

c.) 3x - y is the equation.

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