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.

x - 3 > \( \frac{x}{-1} \)
-1 x (x - 3) > x
(-1 x x) + (-1 x -3) > x
-x + 3 > x
-x + 3 - x > 0
-x - x > -3
-2x > -3
x > \( \frac{-3}{-2} \)
x > 1\(\frac{1}{2}\)

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.

3a⁵ - 4a⁵ = -1a⁵

The formula for circumference is circle diameter x π. Circle diameter is 2 x radius:

c = πd
c = π(2 * r)
c = π(2 * 13)
c = 26π

The perimeter of a triangle is the sum of the lengths of its sides:

p = x + y + z
p = 9cm + 10cm + 12cm = 31cm

To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:

(y + 3)(y + 9)
(y x y) + (y x 9) + (3 x y) + (3 x 9)
y² + 9y + 3y + 27
y² + 12y + 27