Equations Review

Simplify Equations

100

2x + 3b + 2x + 5b

4x + 8b

200

2 (3x + 5)

6x + 10

300

3 (5x + 2) + 5

15x +11

400

6ab + 3c + 6ab

12ab + 3c

500

3(x+ 2) - 5x

-2x + 6

Solve Equations

100

5x+ 3= 23

x=4

200

3(2x+5)=27

x=2

300

2²+3(2x+2)=64

x=2

400

3^{3 +} 2(x+3)=43

x=5

500

5x + 2 +47

x=20

Literal Equations

100

Solve for x:

2x + 4y= 8

x=4-2y

200

Solve for a:

3a+6+2x=30

a=8-2/3a

300

30=y/4+2a-2b

120-8a+8b=y

400

2a+3b+10=40

b=10-2/3a

500

10+2y+3a+5y+4a=50

y=40/7-a

Terms

100

Equation

Has an equal sign

200

Expression

Has variables, coefficients, constants but no equal sign

300

Constant

A number by itself, constantly a number

400

variable

unknown number

500

coefficient

the number multiplied by the variable