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Details

Math Quiz
quiz number 1.8
7
Mathematics
9th Grade
10/17/2007

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Cards

Term

Solve the equation for x and enter your answer in the box below.

3x - 7 = 2

Definition
x=Correct! When you add 7 to both sides of the equation and then divide both sides of the equation by 3, you see that x = 3. You can check this answer by substituting it into the original equation.
Term

Solve the equation for x and enter your answer in the box below.

-4x + 3 = 11

Definition
Good work! When you subtract 3 from both sides of the equation and then divide both sides of the equation by -4, you see that x = -2. You can check this answer by substituting it into the original equation.
Term

Solve the equation for x and enter your answer in the box below.

5x - 2 + x = -20

Definition
Good job! After collecting like terms and solving the resulting equation, you'll find the solution x = -3. You can check this answer by substituting it into the original equation.  reminder x always = 1
Term

Solve the equation for x and enter your answer in the box below.

x - 3x + 4 = 3 - 9

Definition
Well done! After collecting like terms and solving the resulting equation, you'll find the solution x = 5. You can check this answer by substituting it into the original equation.
Term

How many solutions are there to the equation in the box?

2(x + 1) = 2x + 1

Definition
Excellent! When you have simplified the equation as much as possible, you get an equation that does not make sense (2 = 1). This means that the original equation has no solutions.
Term

How many solutions are there to the equation in the box?

2 - 5x = 3(2 - 3x)

Definition
Good job! When you use the distributive property, add 9x to both sides of the equation, and then solve, you see that the equation hase one solution, (x = 1).
Term

How many solutions are there to the equation in the box?

3x - 2(1 + x) + 2 = x

Definition
Great! When you use the distributive property, collect like terms, and then subtract x from both sides of the equation, you get an equation that is always true (0 = 0). This means that the original equation has infinitely many solutions.
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