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 equal sign and the answer on the other.

2b + 5 = \( \frac{b}{-3} \)
-3 x (2b + 5) = b
(-3 x 2b) + (-3 x 5) = b
-6b - 15 = b
-6b - 15 - b = 0
-6b - b = 15
-7b = 15
b = \( \frac{15}{-7} \)
b = -2\(\frac{1}{7}\)

According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:

c² = a² + b²
c² = 1² + 5²
c² = 1 + 25
c² = 26
c = \( \sqrt{26} \)

A parallelogram is a quadrilateral with two sets of parallel sides. Opposite sides (a = c, b = d) and angles (red = red, blue = blue) are equal. The area of a parallelogram is base x height and the perimeter is the sum of the lengths of all sides (a + b + c + d).

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 equal sign and the answer on the other.

5a + 8 = 4 - 6a
5a = 4 - 6a - 8
5a + 6a = 4 - 8
11a = -4
a = \( \frac{-4}{11} \)
a = -\(\frac{4}{11}\)

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.