QSE2 Solving Two-Step Equations Review

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 n: 3n + 4 = 7

Back

n = 1

Front

Solve for t: -4 = 2t - 2

Back

t = -1

Front

Solve for s: 9 = 2s + 1

Back

s = 4

Front

Solve for c: 4c - 6 = 2

Back

c = 2

Front

Solve for z: 0 = 8z + 8

Back

z = -1

Front

What is the first step to solve the equation 2x + 3 = 11?

Back

Subtract 3 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 to reverse the effect of the original operation.

Front

If you have the equation x/4 = 2, how do you solve for x?

Back

Multiply both sides by 4 to isolate x.