math skill review

A two-step equation is an algebraic equation that requires two operations to solve for the variable. For example, in the equation 10x - 20 = 10, you first add 20 to both sides and then divide by 10.

The first step is to subtract 11 from both sides to isolate the term with the variable.

w = 3

Gabrielle should receive $0.35 as change.

-6

Isolating a variable means to manipulate the equation so that the variable is on one side by itself, making it easier to solve.

x = 5

Inverse operations are used to undo operations in an equation, helping to isolate the variable and solve for it.

x = 4

A variable is a symbol, often a letter, that represents an unknown value in an equation or expression.