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.

4b - 9 = \( \frac{b}{3} \)
3 x (4b - 9) = b
(3 x 4b) + (3 x -9) = b
12b - 27 = b
12b - 27 - b = 0
12b - b = 27
11b = 27
b = \( \frac{27}{11} \)
b = 2\(\frac{5}{11}\)

The sum of the interior angles of a triangle is 180°:
180° = a° + b° + c°
c° = 180° - a° - b°
c° = 180° - 34° - 33° = 113°

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.

8a + 7a = 15a

When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)

An acute angle measures less than 90°, a right angle measures 90°, and an obtuse angle measures more than 90°.