Basic Algebraic Concepts and Notations

Front

sum of 4x and 5y

Back

4x+5y

Front

product of 2ab and 8c

Back

2abx8c

Front

sum of 8x, 7y and 6z

Back

8x+7y+6z

Front

subtract 3x from 10y

Back

10y-3x

Front

divide 7x by 9yz

Back

9yz:7x

Front

Mr Chan is x years old. His daughter is 28 years younger than him. Find an expression, in terms of x, for his daughter's age.

Back

x-28

Front

Mr Chan is x years old. Mr Chan is 3 years older than his wife. Find an expression, in terms of x, for his wife's age.

Back

x-3

Front

The diagram shows a rectangle. The shorter side of the rectangle is x cm long. The longer side of the rectangle is three times as long as the shorter side. Find the area:

Back

3xy

Front

Given that x = 5 and y = -2, find the value of 4x +9y

Back

2

Front

Given that x = -4 and y = 7, find the value of -11x-2y

Back

30