Distributive Property
Combine Like Terms
One-Step Equations
Two-Step Equations
Error Analysis
100
2 (3x - 4)
6x - 8
100
7y + 3x + 4 + 1
7y + 3x + 5
100
x + 5 = 23
x = 18
100
75.00x + 160.00 = 760.00
x = 8
100
Write the mistake, and the correct answer!
8 + 2x = 70
-2 = - 2
8x = 68
/ 8 = / 8
x = 8.5
-2 = - 2 <--- Mistake, should be -8!
x = 31
200
7 (4p + 2)
28p + 14
200
1.8y – 9.3y – 6.3y
-13.8y
200
60f = 207
f = 3.45
200
-3x - 10 = 32
x = -14
200
Write the mistake, and the correct answer!
1.15x = 115
- 1.15 = -1.15
x = 113.85
- 1.15 = -1.15 <--- Mistake, should be dividing!
x = 100
300
-6(2x + 5)
-12x – 30
300
18m – 9v + 6v – 7m
11m - 7v
300
50 = -2.5x
x = -20
300
3/4 x + 6 = 33
x = 36
300
2y + 15 = 45
- 15 = - 15
2y = 30
x2 = x2
y = 60
x2 = x2 <--- Mistake, should be dividing!
y = 15
400
6 (4a - 5)
24a - 30
400
x + 4 + 2x + (-8) - 8 - (-4) + 2x + x
6x - 8
400
x – 9.5 = -10.5
-1
400
2.4x + 9 = 63
x = 22.5
400
Write the mistake, and the correct answer!
-6 (2x + 5) = 18
-12x - 30 = 18
-42x = 18
x = -18/42
-42x = 18 <--- Mistake, combined unlike terms
x = -4
500
1/3(9k + 12)
3k + 4
500
DAILY DOUBLE, BET YOUR POINTS!
8t - 4 ( -4t + (-5))
16t + 20
500
-y/5 = 20
y = -100
500
3(9k + 12) = 15
Answer as a mixed number!
k = 3 2/3
500
Write the mistake, and the correct answer!
2 (2.5x + 8.5) = 42
5x + 8.5 = 42
-8.5 = -8.5
5x = 14.5
x = 6.7
5x + 8.5 = 42 <--- Mistake, didn't distribute fully!
x = 5