Math

General equations

100

26 = 2x + 4

x = 11

200

4 = 40 + 3(5x - 2)

x = 2

300

28 = -2(x - 6) + 10

x = -3

400

(x + 4)/3 = -5 

x = -19

500

1.2x + 2.4(x - 10) = 12

x = 10

Expressions

100

What is the variable in this equation? 

5x - 3

x

200

Translate this equation into words. 

f(x) = x²

f of x equals x to the power of two

300

What is the unknown variable in this equation? 

x > 3

x

400

What is the "little" two called in this equation?

y = x²

exponent

500

What is the coefficient in this equation?

y = 38x + 2

38

One step equations

100

X + 10 = 100

X = 90

200

X/5 = 6

X = 30

300

9 + X = 2

X = -5

400

X - 2 = -8

X = -6

500

1/9 = X/7

X = 7/9

Two step equations

100

2x - 4 = 6

x = 5

200

(x/2) - 2 = -7

x = -10

300

3x - 4 = 11

x = 5

400

2x + 5 = 21

x = 8

500

4.25 - 0.25x = 3.75

x = 2

Multi step equations

100

2(x - 5) + 6x = 8

x = 2.25

200

4(x + 3) + 2x = 36

x = 4

300

48 + 2(x - 6) + x = 6 

x = -10

400

3(x + 9) = x + 28

x = 0.5

500

(6x + 4)/2 = 2x - 11

x = -13