Math Review

Equations

100

3x = 72

x=24

200

4(x+4)=68

x=13

300

2n - 6 = -8n + 14

n = 2

400

7 - (5x + 4) = -6(x - 4)

x=21

500

7x - (3x + 5) - 8 = 2(4x + 10) - 7x + 6

x=13

Expressions

100

4x + 497x

501x

200

7(d + 4) + 8d

15d + 28

300

8(2d + 4d) + 7(7d)

97d

400

2(x + 4x + 9) + 4x +10

14x + 28

500

7(x² + x +4) + 8(x +5) + 5(2x +7)

7x² + 25x + 103

Exponents

100

(5⁸)(5¹⁴)

5²²

200

14^-6x²

x² / 14⁶

300

18x⁴y⁰

18x⁴

400

(x⁴)( y^-2 )/ x^-3

x⁷ / y²

500

(8x⁴)(4x⁷) / 3x^-5

32x¹⁶/3

Multiplying and Dividing Fractions

100

(5/8)(6/9)

5/12

200

(1/4)(7/9) 

7/36

300

(1 3/4) / (7/11)

11/4

400

(x²/4)(6x/11)

3x³/22

500

(1 1/9) / (-4)

-5/18

Adding and Subtracting Fractions

100

-2/7 + 8/7

6/7

200

2 7/8 + 5 1/2

8 3/8

300

-2 7/8 + 3 5/8

3/4

400

-16/14 + 2/4

-9/14

500

5x/6 + 7x/9

29x/18