2 Step Equations

Front

What is a two-step equation?

Back

A two-step equation is an algebraic equation that requires two operations to solve for the variable.

Front

How do you isolate a variable in a two-step equation?

Back

To isolate a variable, perform the inverse operations in reverse order: first undo addition or subtraction, then undo multiplication or division.

Front

Solve for w: 5w + 12 = 47

Back

w = 7

Front

Solve for a: 15 = 2a + 7

Back

a = 4

Front

Solve for r: 8r - 14 = 42

Back

r = 7

Front

Solve for p: 6p - 5 = 13

Back

p = 3

Front

Solve for x: 2x + 16 = 130

Back

x = 57

Front

What is the first step to solve the equation 3x + 9 = 24?

Back

Subtract 9 from both sides to isolate the term with the variable.

Front

What does it mean to 'undo' an operation in algebra?

Back

To 'undo' an operation means to perform the opposite operation, such as subtracting to undo addition or dividing to undo multiplication.

Front

If an equation is in the form ax + b = c, what is the first step to solve for x?

Back

Subtract b from both sides to isolate the term with x.