Pre-College Algebra Part One

Evaluate a Variable Expression

100

ab + dc when a= 2, b=3, c= -1, and d= -4

10

200

b² - (d-c)² when a= 2, b= 3, c= -1, and d= -4

0

300

b^a when a=2, b=3, c= -1, and d= -4

9

400

-d³ + 4ac when a=2, b=3, c= -1, and d= -4

56

500

2(d-b) ÷ (3a-c) when a=2, b= 3, c= -1, and d= -4

-2

Evaluate Equations

100

x-2= 7

x= 9

200

-7= x+8

x= -15

300

3x = 12

x= 4

400

5x+9= 6

x=-3/5

500

3x+7= 3+7x

x=1

Simplify a Variable Expression

100

3x-5x+9x 

7x

200

5b-8a-12b

-8a-7b

300

-(-x-y)

x+y

400

-3(x-2)

-3x+6

500

5v-3(2-4v)

17v-6

To Solve an Equation containing Parentheses

100

2x+3 (x-5)=15

6

200

2x+2 (x+1) =10

2

300

2-3(y-3) = 4y-7

(8/3)

400

2(3x-2) - 5x = 3-2x

(7/3)

500

(3/2) - (10x/9) = (-1/6)

(3/2)

To Solve an inequality in one variable

100

x-3<2

{x|x<5}

200

x+4≥2

{x|x≥-2}

300

-2x>8

{x|x<-4}

400

3x-5≥-2x+5

[2,∞)

500

2-2(7-2x) < 3(3-x)

(-∞,3)