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. It typically involves addition or subtraction followed by multiplication or division.

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, eliminate the constant term by adding or subtracting, then eliminate the coefficient by multiplying or dividing.

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Back

x = 168

Front

Back

x = 21

Front

Solve for a: 15 = 2a + 7

Back

a = 4

Front

Solve for n: 3n + 4 = 7

Back

n = 1

Front

Solve for c: 3c + 5 = 23

Back

c = 6

Front

Back

Subtract 5 from both sides to isolate x.

Front

What does it mean to 'check your solution' in an equation?

Back

Checking your solution means substituting the value back into the original equation to verify that both sides are equal.

Front

What is the inverse operation of addition?

Back

The inverse operation of addition is subtraction.