Row 1
2x+12 = 20
x=4
3x+15 = 21
x = 2
10x + 20 = 90
x = 7
5x - 10 = 40
x = 10
2x - 8 = 6
x = 7
x2 = 9
x = 3 AND -3
x2 = 25
x = 5 AND -5
x2 = 49
x = 7 AND -7
x2 = 4
x = 2 AND -2
x2 = 36
x = 6 AND -6
2x2 = 50
x = 5 AND -5
10x2 = 10
x = 1 AND -1
5x2 = 45
x = 3 AND -3
7x2 = 700
x = 10 AND -10
3x2 = 12
x = 2 AND -2
1/2 + 1/4
3/4
1/2 + 1/8
5/8
1/5 + 1/3
8/15
1/2 - 1/5
3/10
1/3 - 1/4
1/12
30 is what percentage of 50?
60%
60 is what percentage of 80?
75%
18 is what percentage of 20?
90%
What is 40% of 60?
24
What is 80% of 40?
32