Pre Algebra Solving Two 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

What is the first step to solve the equation 3x + 5 = 20?

Back

Subtract 5 from both sides to isolate the term with the variable.

Front

What is the inverse operation of addition?

Back

Subtraction.

Front

What is the inverse operation of subtraction?

Back

Addition.

Front

Solve for x: 2x + 4 = 12

Back

x = 4.

Front

Solve for y: y - 7 = 10

Back

y = 17.

Front

What does it mean to 'solve' an equation?

Back

To find the value of the variable that makes the equation true.

Front

Solve for z: 5z = 25

Back

z = 5.

Front

What is the solution to the equation 4x - 8 = 0?

Back

x = 2.