Adding and Subtracting Equations

Addition 1

100

h + 21 = -52

h = -73

200

m + 5 = -10

m = -15

300

n - (-14) = -31

n = -45

400

t + 3/4 = 25/4

t = 5 1/2

500

-9/10 + x = -19/10

x = -1

Addition 2

100

g + 6 = -21

g = -27

200

p - (-13) = -10

p = -23

300

-18 = -9.6 + f

f = -8.4

400

-1/15 + r = 3/5

r = 2/3

500

h - (-5.6) = 1.2

h = -4.4

Subtraction 1

100

w - 9 = 10

w = 19

200

z - 2/9 = 1/9

z = 1/3

300

n + (-14) = -31

n = -17

400

f - 15.9 = 2.3

f = 18.2

500

- 45 - x = - 90

x = 45

Subtraction 2

100

k - 13 = 5

k = 18

200

8.7 + b = 14.5

b = 5.8

300

-10.3 = w - 5.8

w = 4.5

400

-7 1/3 = p - 4/9

p = 6 8/9

500

j - 1/8 = -7/9

j = -47/72

Vocabulary

100

What are two numbers that add together to equal zero called?

Zero Pair

200

What does YNB YNC stand for?

You no balance, you no credit

300

In order to receive full credit on a question, what do you need to show?

Balancing

400

What are operations that undo one another called?

Inverse operations

500

What property happens when the same number is added to each side of an equation to produce an equivalent equation?

Addition Property of Equality