Solving Equations

Inverse Operations

10

What does inverse mean?

Inverse means....

Opposite, it will cancel out

20

What is the Inverse Operation of Addition

Subtraction

30

What is the Inverse Operation of Division

Multiplication

40

Name the inverse operation of this problem:

- x = 15

Division by -1

50

What is the inverse operation of this problem:

x / 20 = -8

Multiply by 20 because it is the reciprocal.

Skill Review

10

Can any terms below be combined? 

3x + 4y + 10 

No, because they aren't like terms.

20

What operation is used when distributing? (HINT: dolphin jumps)

Example of a distribution problem:  2 ( 3x - 1)

multiplication

30

Solve with distribution:

5(3 - 2x)

15 - 10x

40

Solve by combining like terms:

12m + 36 + 3y +2m + y

14m + 4y + 36

50

Simplify using distribution and combining like terms.

4n + 4(n + 6)

8n + 24

Mild

10

7 = a + 8

-1

20

3 = m / 8

24

30

r - 19 = -2

17

40

10x = 80

8

50

This problem is solved incorrectly.  Fix it!

x + 10 = -18

    -10     -10

--------------------

x = -8

The negatives need to be combined and will equal -28.

-18 - 10 = -28    NOT    -8

Medium

10

b - 6 - 2 = -5

3

20

-5 = b - 5 - 6b

8

30

2 - 5v + 3v = 12

-5

40

-2p - 6p = 16

-2

50

-3 = -6x + 2 + x

1

SPICY

10

-x - 8 = 7x - 56

x = 6

20

-36 +5p = -21 + 20p

p = -1

30

4 - 7n = 7 - 49n - 3

n = 0

40

-4(x - 2) = -10 - 7x

x = -6

50

7b + 3(6b - 4) = -12 + 7b

b = 0