One-Step Equations
9x = -27
What is -3 ?
2k + 5 = 17
What is 6 ?
1. Laura uses the expression 0.40a, where a is the original attendance at a play, to find the reduced attendance at the next performance. Which is an equivalent expression?
What is a - 0.60a ?
8. Solve the equation:
-0.25a - 5 = -0.5
What is -18 ?
A letter used to represent an unknown number
What is a variable?
a + 13 = 10
What is -3 ?
y/9 - 15 = 5
What is 180 ?
2. The width of a rectangle is 4 times its length, l. Which expressions represent the perimeter of the rectangle? (there are three correct responses)
What are P = 10l, P = 2(4l) + 2 (l), and P = 2(4l + l) ?
4. Find the expression equivalent to:
2(-12x - 3) + (4x - 1/3)
What is -20x - 6 1/3 ?
The opposite of addition
What is subtraction?
k - (-83) =121
What is 38 ?
k/8 + 21 = 97
What is 608 ?
9. Benson played 12 games of trivia. He had a perfect score on every game and received 35 bonus points per game. He earned a total of 1,260 points. How many points did he earn per game not including the bonus points?
What is 70 ?
3. The sum of the measures of ∠SWT and ∠TWV is 90°. Find the value of m.
What is 8 ?
A number right in front of a variable
What is a coefficient?
-11x = 275
What is -25 ?
4j - 71 = 29
What is 25 ?
10. Last year’s cost, c, of a water park season pass increased 35%. The expression c+0.35c can be used to represent the increased price of a season pass. What is another expression that can be used to find the the new cost of a season pass?
What is 1.35 c ?
5. Find the value of x in the equation:
8x - 3(4x + 8) = 216
What is -60 ?
Two angles whose measures have a sum of 90°
-80 = x/15
What is -1200 ?
19b + 314 = 1663
What is 71 ?
7. Craig sold 8 fewer than 3/4 as many cars as Tim sold. Craig sold 28 cars. Which equation can be used to find the number of cars, c, that Tim sold?
What is 3/4c - 8 = 28 ?
6. What is the measure of ∠HPL? *Hint: remember that vertical angles are congruent*
What is 129 ?
Two angles in the same plane with a common vertex and a common side, but no common interior points.
What are adjacent angles?