Solving Expressions or Equations

What is the solution of the equation below?

m-23.2 = 54.5

• m = 31.3

• m = 34.3

• m = 77.7

• m = 34.7

Select the equations where y = 2, is the solution. Select all that apply.

• y - 1 = 3

• 15 - y = 13

• y + 5 = 7

Lucy purchased 4 equally-priced shirts for $48. Frank bought 3 shirts. Each of his shirts were $2 more than the price of a shirt Lucy purchased. How much did frank spend on his entire purchase?

• Lucy = $48/4=$12 per shirt

• Frank=12+2=$14 per shirt

• 14 * 3= $42 total

Which of the following is the solution to the equation x - 8 = 19

• 11

• 27

• 26

• 152

An inverse operation is

• reversing the sign in an inequality

• using the opposite operation to solve equations

•  A number’s distance from zero

One difference between equations and expressions would be...

• you solve both of them using inverse operations.

• you flip the symbol when you multiply or divide by a negative

• equations have an equals because they show two equal expressions. Expresions have terms and operations.

Choose the first step in solving the following equation.
-3y - 12 = 14

• add 3 from both sides

• add 12 to both sides

• subtract 12 from both sides

Solve:
19  +  a  =  –40

• –950

• –59

• –31

• 2.6

Solve:
x – 8 = –5 

• 13

• –13

• 3

• –3

Solve:

• 20

• 7

• 10

• 3