Equations Review

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing variables.

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value(s) of the variable(s) that make the equation true.

Front

What is the first step in solving the equation 2d + 7 = 9?

Back

Subtract 7 from both sides to isolate the term with the variable: 2d = 2.

Front

How do you isolate a variable in an equation?

Back

You can isolate a variable by performing inverse operations, such as addition, subtraction, multiplication, or division, to both sides of the equation.

Front

Back

d = 1.

Front

Back

x = 78.

Front

How do you eliminate a fraction in an equation?

Back

Multiply both sides of the equation by the denominator to eliminate the fraction.

Front

Back

r = 10.

Front

What is the solution to the equation 9 + 3x = 10?

Back

x = 1/3.

Front

What is the first step to solve the equation 4w - 9 = -9?

Back

Add 9 to both sides to isolate the term with the variable: 4w = 0.