Translating Equations with One Variable

Correctly translated, 9 subtracted from a number is 12 would be...

• 9 - x = 12

• x - 9 = 12

• 9 + x = 12

• -9 + x = 12

In 2010, a tree was 8 feet tall. In 2011 the tree was 14 feet tall. Write an equation and find how many feet f the tree grew. Write an equation to solve this problem. Use f as your variable.

• f + 8 = 14

• f - 8 = 14

• f/8 = 14

• 8f=14

Breanna went to the mall and spent $35.00 on shoes. When she she got home she had $40.00 in her purse. Which equation can be used to find the amount of money she started with?

• 35.00 + x = 40.00

• 40.00 - 35.00 = x

• 35.00x = 40.00

• 40.00x = 35.00

Last Friday Cicely had $22.50. Over the weekend she received some money for cleaning out the attic. She now has $32. Which equation represents how much money she received?

• 22.50/ x = 32

• 32/ 22.50 = x

• 22.50 + x = 32

• 32 - x = 22.50

Which equation would describe "two times a number plus five equals 15"?

• x + 5 = 15

• 2x + 5=15

• x + 2(5) = 15

• 2(x + 5) = 15

Find the solution:
10 = 4x - 2

• x = 3

• x = 2

• x = -3

• x = -2

Six decreased by twice a number.

• 2x - 6

• 6 < 2x

• 6 - x

• 6 - 2x

Solve the equation:
-5x = 25

• x = 20

• x = -20

• x = -5

• x = 5

4x + 7 = 23

• x = 16

• x = 4

• x = 9

• x = 12

Which equation represents the following application:

Four times a number increased by 25 is 13 less than six times the number.

• 4x+25=-6x+13

• 4x+25=13-6x

• 4x+25=6x-13

• 4x+25=13<6x