Simplifying Like Terms
How many terms are there?
3a + 7b - 3
3
Expand
3(x+1)
3x+3
Solve
3x = 18
x = 6
Write the following as an equation
The temperature is x. The temperature increases by 7 degrees. The new temperature is 10
x + 7 = 10
What is the HCF of 20 and 28
4
Simplify
3a + 6a + 2b
9a + 2b
Expand
5(3x-y)
15x - 5y
Solve
-5x = 7
x = -5/7
Write the following as an equation
Double of a number is 17.
2x = 17
Write down an example of a rational number
Simplify
5a + 12b - 16a - 4b
-11a + 8b
Expand and simplify
(x+2)(x+5)
x2 + 7x +10
Solve
2x + 5 = 25
x = 10
Write the following as an equation
A restaurant bill is shared between Colin and his two friends. They each pay $22.50
x/3 = 22.50
How many integers are there between 0 and 99?
100
Combine the like terms
3x2 + 5x - 2y - 5x2 - 2x + 7y
-2x2 + 3x + 5y
Expand and Simplify
(2x-1)(x+4)
2x2 + 7x - 4
Solve
3x - 7 = -2
x = 5/3
Write the following as an equation
A taxi charges $4 per minute. A journey costs $56. How many minutes is the journey?
4x = 56
How many factors does 30 have?
8
Simplify
3xy + 5yx - 2x2 + 6y + 13x2
11x2 + 8xy + 6y
Expand and Simplify
(x+4)2
x2 + 8x + 16
Solve
4x - 5 = 2x - 3
x = 1
The temperature is currently -8. The temperature drops and the new temperature is now -14.
-8 + x = -14
Which type of numbers always have an ODD number of factors?
Square numbers!