Writing Equations

Front

five times a number is twenty five.

Back

5x = 25

Front

The sum of x and ten is twenty.

Back

x + 10 = 20

Front

A number minus 9 is twelve.

Back

x - 9 = 12

Front

Five less than a number n is thirty four.

Back

n - 5 = 34

Front

Two less than a number is fourteen.

Back

x - 2 = 14

Front

A number times two is eight.

Back

2x = 8

Front

The sum of x and fifteen is fifty six

Back

x + 15 = 56

Front

Mallory bought pizza and soda for a party. If she spent $12.57 on the sodas and $10.95 for each pizza, how many pizzas did she buy if her total is $89.22?

Back

10.95x + 12.57 = 89.22

Front

Olivia bought a notebook for $12.50 and 9 pens. If her total was $43.73, what is the equation to find the cost of each pen?

Back

43.73 = 12.5 + 9x

Front

Elena is cutting a 30-foot piece of ribbon for a craft project. She cuts off 7 feet, and then cuts the remaining piece into 9 equal lengths of x feet each. Which equation matches the situation?

Back

7 + 9x = 30