Undoing Algebra Equations

If x = 3

Does:

x +4 =7

• YES

• NO

If b= 5...

Does:

b-2=7

• Yes

• No

If d= 7.

Does:

7(d-6) = d

• Yes

• No

If g =2

Does

g + 5 = 3g

• Yes

• No

If f= 3.

does

f x 4 = 20

• YES

• NO

What did we do to both sides to get the answer?

• • - 5

• +5

• x 5

• / 5

What did we do to both sides to get the answer?

• /10

• x 7.2

• x 10

• -10

What did we do to both sides to get the answer?

• +12

• x 2

• -12

• /8

What do we need to do to both sides to get to the answer?

• /4

• x 4

• -4

• /12

What do we need to do to both sides to work out what x is?

4x=20

• /4

• x 4

• -4

• x5