To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the > sign and the answer on the other.

-5x - 8 > \( \frac{x}{3} \)
3 x (-5x - 8) > x
(3 x -5x) + (3 x -8) > x
-15x - 24 > x
-15x - 24 - x > 0
-15x - x > 24
-16x > 24
x > \( \frac{24}{-16} \)
x > -1\(\frac{1}{2}\)

A rectangle is a parallelogram containing four right angles. Opposite sides (a = c, b = d) are equal and the perimeter is the sum of the lengths of all sides (a + b + c + d) or, comonly, 2 x length x width. The area of a rectangle is length x width. A square is a rectangle with four equal length sides. The perimeter of a square is 4 x length of one side (4s) and the area is the length of one side squared (s²).

The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):

sa = 2lw + 2wh + 2lh
sa = (2 x 9 x 9) + (2 x 9 x 2) + (2 x 9 x 2)
sa = (162) + (36) + (36)
sa = 234

To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.

3a⁹ + 4a⁹ = 7a⁹

The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.