5.4B Equations

Front

What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal, often containing variables.

Front

What does it mean to solve for a variable in an equation?

Back

To solve for a variable means to find the value of that variable that makes the equation true.

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

What is a variable in an equation?

Back

A variable is a symbol, often a letter, that represents an unknown value in an equation.

Front

How do you isolate a variable in an equation?

Back

To isolate a variable, you perform operations to both sides of the equation to get the variable alone on one side.

Front

What is the solution to the equation 23 + 7 x 11 + q = 8 x 7 + 34 + 14?

Back

q = 4.

Front

What is the solution to the equation 17 + 12 + s = 11 + 23?

Back

s = 5.

Front

What is the solution to the equation 16 + p + 9 = 12 + 17?

Back

p = 4.

Front

What is the solution to the equation 11 + 2 x 8 = c + 13?

Back

c = 14.

Front

What is the solution to the equation 12 x 4 + 13 + 20 = 34 + r?

Back

r = 47.