Lesson 19

What is the solution to the equation h - 8 = 5?

If you substitute the solution back into the equation f + 2.8 = 7.3, which of the following number sentences is true?

• 4.5 + 2.8 = 7.3

• 4.5 + 2.8 = 9.3

• 2.8 + 2.8 = 7.3

• 7.3 + 2.8 = 4.5

What is the solution to the equation m + 4 = 11?

After solving the equation m + 4 = 11, what operation do we perform to check if the solution is correct?

• Multiply the solution by 4

• Add 4 to the solution

• Subtract 4 from the solution

• Substitute the solution back into the original equation

What is the solution to the equation k - 7 = 5 when solved algebraically?

• k = 5

• k = 2

• k = 12

• k = 10

Which statement correctly describes the check for the solution to the equation k - 7 = 5?

• A) Substitute 5 for k and check if the equation is true.

• B) Substitute 12 for k and check if the equation is true.

• C) Add 7 to both sides of the equation and check if k equals 5.

• D) Subtract 5 from k and check if the result is 7.

What is the solution to the equation ( r - 5.8 = 2.7 )?

If the measure of angle α and 138 degrees add up to 180 degrees, what is the measure of angle α?

• 42 degrees

• 48 degrees

• 52 degrees

• 138 degrees

What is the solution to the equation w + 8 = 22?

• A) 14

• B) 22

• C) 30

• D) 34

If c - 18 = 20, what is the value of c?

• A) 2

• B) 18

• C) 38

• D) 40