Simplify Expressions
3x + 4x
7x
Evaluate x + 5 when x = 3
8
Solve 2x = 10
x = 5
Factor 4x + 8 There are 2 correct answers
2(2x + 4)
4(x + 2)
x values: 1, 2, 3
y values: 2, 4, 6
y = 2x and x = 1/2y and x = y/2
5x + 2 + 4x + 6
9x + 8
Evaluate: 2x + 3 when x = 4
11
Solve x/3 = 4
x = 12
Factor 6y + 12 There are 2 correct answers
2(3y + 6)
6(y+2)
x values: 1, 2, 4
y values: 3, 6, 12
y = 3x, x=1/3y, x = y/3
4a + 3b - 2a + 5b
2a + 8b
Evaluate: 3a - 2b when a = 2, b = 5
-4
Solve x - 8 = 7
x = 15
Factor 3x + 6y only one correct answer
3(x + 2y)
x values: 2, 4, 5
y values: 10, 20, 25
y=5x or x = y/5 or x =1/5y
6x - 3 + 2x + 7
8x + 4
Evaluate: (x² + y) ÷ z when x=3, y=5, z=2
Solve 2x + 3 = 11
x = 4
Factor 10a - 5b - there is only one correct answer
5(2a - b)
x values: 3, 6, 9
y values: 7.5, 15, 22.5
y=2.5x or y=5/2x or x=2/5y
2x + 4y - y + 6 - 3x - 2
-1x + 3y + 4
Evaluate: 4(x - 3) + 2y when x = 5, y = 6
20
15/x + 15 = 18
x = 5
Factor 12x + 14xy + 6xz there is only correct answer
Hint - you can factor out a number AND a letter)
2x(6 + 7y + 3z)
x values: 5, 10, 20
y values: 8, 16, 32
y = 8/5x or y=1.6x or x=5/8y