Simplifying Expressions Solving Equations and Equations Word Problems

Please solve this equation

x - 12 = 13

• x = 25

• x = 1

• x = 156

• None of these match my answer

Which expression best represents "twice the difference between a number and 7"?

• 9

• 15

• 30

• 2

• 1

• 4

4a + 7b = 28

• Expression

• Equation

p² + 3p = 10

• Expression

• Equation

7m = 4n

• Expression

• Equation

5q² + 2 = 0

• Expression

• Equation