Solving Equations

Addition Property of Equality

100

x-2=5

x=7

200

y-5=23

y=28

300

h-325=873

h=1,198

400

k-452=-34

k=418

500

j-5672=-892

j=4,780

Subtraction Property of Equality

100

y+4=7

y=3

200

n+18=48

n=30

300

p+1657=2248

p=591

400

x+180=-76

x=-256

500

o+193=17

o=-176

Multiplication Property of Equality

100

x/2=8

x=16

200

y/7=12

y=84

300

k/15=60

k=900

400

v/-18=-64

v=1,152

500

b/-450=19

b=-8,550

Write the Equation and Solve

100

Jeff had 4 tractors in 2018. He got x more tractors in 2019. He then had 7 tractors total. How many tractors did Jeff get during 2019?

4 + x =7

x=3

200

Kim had h hair ties. She then lost 3 the next day. She now has 12 hair ties. How many hair ties did Kim start with?

h-3=12

h=15

300

Jake did 33 sit-ups on day one. One day two, Jake did s sit-ups. Jake did 72 sit-ups total for both days. How many sit ups did Jake do on day two?

33+s=72

s=39

400

Hadley drank 8 ounces of coffee on Tuesday. On Wednesday, she drank x ounces of coffee. She drank 14 ounces of coffee total for both days. How many ounces of coffee did she drink on Wednesday?

8+x=14

x=6

500

Dave had x dollars in his bank account. He then went to the grocery store and spent 321.87. His account after going to the store was 52.98. How much money did Dave start with in his bank account?

x-321.87=52.98

x=374.85

Decimals and Fractions

100

x - 1/2 = 2

x= 2 1/2

200

w - 1.5 = 2.5

w=4

300

c + 7.4 = -4.4

c = -11.8

400

r + 9.564 = 2.3

r=-7.264

500

s + 2/5 = -3/10

s= -7/10