C2 - 6.4-6.7 Review

Translating Equations

100

Three less than the product of a number and 5 is 27

5x - 3 = 27

200

The quotient of a number and eight, plus two is equal to seven

x/8 + 2 = 7

300

Four more than the product of twelve and a number is twenty-eight

12x + 4 = 28

400

The total of a number and seven doubled is twenty two

2(x + 7) = 22

500

The difference between a number and six, divided by ten is three

(x - 6)/10 = 3

Vocabulary

100

A _____ is an unknown amount/quantity or value.

A variable is an unknown amount/quantity or value.

200

___ ___ have the same variable or no variable

like terms have the same variable or no variable

300

What is the inverse of subtraction?

Addition

400

What is a coefficient?

The number attached to a variable

500

What is the inverse of division?

Multiplication

1-2 Step equations

100

-7m = 63

-7m = 63

m = -9

200

n/-7 = -8

n = 56

300

-2k - 4 = 8

k = -6

400

h/-3 + 6 = -4

h = 30

500

h - 9/5 = -10

h = -8  1/5

OR h = -41/5

Multi-step equations

100

3m - 1 = m + 5

m = 3

200

-5 - 3x = 2x + 10

x = -3

300

4n - 40 = 7(-2n+2)

n = 3

400

38 + 7k = 8(k+4)

k = 6

500

5(z + 4) - 13 = 2z + 19

z = 4