Equation and Number Lines

What property states that if you subtract the same number from both sides of an equation, the two sides will remain equal.    For example,  3+4 =  7   
               -4         -4
both sides equal 3!

• Addition property of equality

• Subtraction property of equality

• Multiplication property of equality 

• Commutative Property

2) Solve this equation

t - 7 = 2

• t = 9

• t = 7

• t = 5

• None of these match my answer

Which equation best first the following situation?

Some surfers recommend that a beginner's surfboard be 14 inches greater than the surfer's height. If a surfboard is 82 inches, how tall should the surfer be to ride it?

• 96 inches

• 68 inches

• h - 14 = 82

• h + 14 = 82

Please solve this equation

^p/₅ = 7

• p = 35

• p = 12

• p = 2

• None of these match my answer

If two lines are parallel their slopes are  ____________

• the same.

• negative reciprocals of each other.

Solve the equation
21 = b - 6

• b = 27

• b = 15

Please solve this equation

• m = 18

• m = 2 ¹/₈

• m = 424

• None of these match my answer

What property states that if you add the same number to both sides of an equation, the two sides will remain equal?

• Addition property of equality

• Subtraction property of equality

• Multiplication property of equality

• Division property of equality

• None of these match my answer

Which equation best fits the following situation? A number is 8 less than twice another number. If the first number is 10, what is the second number?