Substitution
Solve when x =10
x + 13 =
(2x + 3) + (2x + 3) =
4x + 6
3(x+2) =
3x + 6
How many cards are in a standard deck of playing cards?
52
Solve when x = 5
15 - x =
10
(5x + 8) + (3x + 2)
8x + 10
8x + 20
What is the only planet in our solar system to rotate clockwise on its axis?
Venus
x = -12
x + 20 =
8
(4x + 6) - (x + 3)
3x + 3
(6x+2)(-2)
-12x - 4
What is an 8-sided shape called?
Octagon
x = -6
14 + x - 10 =
-2
(-2x + 4) - (-5x - 3) =
3x + 7
-8(-5x-5)
40x + 40
Which month of the year is National Ice Cream Month?
July
x = -15
25 - 5 + x =
5
-20x + 4
-7(2x - 3y + 6)
-14x + 21y - 42
Actor Steve Carell plays what memorable character in the popular TV series "The Office"?
Michael Scott