Solving One Step Equations using Addition or Subtraction

Front

What is a one-step equation?

Back

A one-step equation is an equation that can be solved in a single operation, either by addition or subtraction, to isolate the variable.

Front

What is the goal when solving an equation?

Back

The goal is to isolate the variable on one side of the equation to find its value.

Front

What is the inverse operation of addition?

Back

Subtraction.

Front

What is the inverse operation of subtraction?

Back

Addition.

Front

If y + 6 = 20, how do you isolate y?

Back

Subtract 6 from both sides: y = 20 - 6, so y = 14.

Front

If 20.5 = x + 4, how do you solve for x?

Back

Subtract 4 from both sides: x = 20.5 - 4, so x = 16.5.

Front

In the equation 2 + n = 16, what is n?

Back

Subtract 2 from both sides: n = 16 - 2, so n = 14.

Front

What should you do to solve x + 7 = 12?

Back

Subtract 7 from both sides: x = 12 - 7, so x = 5.

Front

What is the first step to solve 254 = p - 765?

Back

Add 765 to both sides: p = 254 + 765.

Front

What does it mean to isolate a variable?

Back

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