Math 8: Unit 2 Flashcard #3 Review (Equations)

Front

Solve the equation: 3x + 15 = 3(x + 5)

Back

Infinitely Many Solutions

Front

In the equation x + 7 = 12, how do you isolate x?

Back

Subtract 7 from both sides. The solution is x = 5.

Front

Which equation has no solution? 3(2x+1) = 6x+1

Back

This equation has no solution.

Front

Solve for x: 2x + 1 = 5x - 3

Back

x = 10

Front

Solve the equation: 4x + 7 = 23

Back

x = 4

Front

What is the first step to solve x + 7 = 12?

Back

Subtract 7 from both sides.

Front

What does it mean if an equation has no solution?

Back

It means there are no values for the variable that make the equation true.

Front

What is the solution to the equation 2(x - 7) = 2x - 14?

Back

Infinitely Many Solutions.

Front

How do you check if x = 10 is a solution for 2x + 1 = 5x - 3?

Back

Substitute x = 10 into the equation and verify both sides are equal.

Front

What is the solution to the equation 3(2x + 1) = 6x + 1?

Back

No Solution.