7.12 2-step equations practice problems

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 the reverse order of how they are applied.

Front

Solve for x: 1/2 x + 4 = 15

Back

x = 22

Front

Solve for x: 3x - 5 = 22

Back

x = 9

Front

Solve for y: y/3 + 4 = 25

Back

y = 63

Front

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

Back

Subtract 3 from both sides to get 2x = 8.

Front

What is the purpose of using parentheses in equations?

Back

Parentheses indicate which operations should be performed first in an equation.

Front

If Hailey spent $35.97 on 2 shirts and a pair of pants costing $17.99, how do you find the cost of each shirt?

Back

Subtract the cost of pants from the total, then divide by 2.

Front

How do you calculate change from a purchase?

Back

Subtract the total cost from the amount paid.

Front

If a coffee shop sells mugs for $12.79, how much change will you get from a $20 bill?

Back

You will receive $7.21.