One Step Equations Guided Notes

The key strategy for solving it is to rearrange the equation until you have the__________ ________ all by itself on one side of the equal sign.

Whatever is on one side of the equal sign ________  have exactly the same value

as whatever is on the other side.

True or False:

An equation must always be in balance.

• True

• False

The key is that whenever we make a change to an equation,

we have to make the _________   _________  __________ on both sides.

What symbol makes x + 7 = 15 an equation?

• =

• +

• x

Yes! Since seven is being added to the ‘x’, we can undo that by _____________ 7 from that side of the equation.

What is the solution to the equation x + 7 = 15?

What number needs to be subtracted from both sides of the equation 40 = 25 + x in order to solve for x?

• 25

• x

• 40

What is the opposite or inverse operation of subtraction?

• addition

• subtraction

• multiplication

• division

What is the proper way to write your answer?

• x = 21

• 21

• 21 - 5 = 16