Adding and Subtracting Equations

Front

What is the solution to the equation x + 4 = 16?

Back

x = 12

Front

What is the solution to the equation x + 19 = 46?

Back

x = 27

Front

How many years did Kit Carson live if he was born in 1809 and died in 1868? Use the equation 1,809 + x = 1,868.

Back

x = 59

Front

If Lindsay has already traveled 13.2 kilometers in a 25 kilometer bike race, which equation can she use to find the distance left?

Back

x - 25 = 13.2

Front

What is the solution to the equation a - 17 = 9?

Back

a = 26

Front

What does it mean to isolate a variable in an equation?

Back

To isolate a variable means to get the variable alone on one side of the equation.

Front

What is the first step to solve the equation x + 10 = 20?

Back

Subtract 10 from both sides.

Front

What is the principle of inverse operations in solving equations?

Back

Inverse operations are operations that undo each other, like addition and subtraction.

Front

What is the solution to the equation 25 - x = 13.2?

Back

x = 11.8

Front

What is the solution to the equation x - 5 = 10?

Back

x = 15