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Before it’s too late!

Use the Distributive Property

Distribute 9 to both terms

9 ( b + 11)

= (9 * b) + ( 9 * 11)= 9b + 99

DO NOT combine 9 bees with 99 nothings.

Distribute 6x to both terms

6x (3x + 4)

= (6x*3x) + (6x * 4)=(6*3*x*x) + (6*4*x)=(18 *x2) + (24*x)=(18x2) + (24x)

Making even the simplest task difficult by not following steps.

• Find the variable.• What is the

operation?• Use the inverse

operation on both sides

• Work down.

• x – 10 = - 4• x – 10 = - 4• x – 10 = - 4• Addition is the inverse

(opposite) of subtraction.

• x – 10 = - 4• + 10 +10• x + 0 = +6• x = +6

PLEASE

• Learn the steps• Don’t take shortcuts until you learn the

process.• Your success the rest of this year in

Algebra I depends on learning this necessary skill and applying it to multi-step equations.

• Ask questions if you don’t understand.

following steps

• Find the variable.• What is the

operation?• Use the inverse

operation on both sides

• Work down.

• r + 18 = - 7• r – 18 = - 7• x – 18 = - 7• Subtraction is the inverse

(opposite) of addition.

• r + 18 = - 7• - 18 -18• r + 0 = -25• r = -25

What’s the next question?

• What’s the variable?• What is the

operation?• What should we do

on both sides?• Work down.

• 111y = - 888• 111*y = - 888• Divide by 111• Division is the inverse

(opposite) of multiplication.

• 111y = - 888 111 111• 1y = -8• y = -8111 111 1=ﾸ

8 16 88

x- = - -ﾷ ﾷ

-

8128

8

x-= +

-

168

x= -

-

816 8

1 8

x-= - -ﾷ ﾷ

-

128x =

5 3 59

3 5 3

x=ﾷ ﾷ

15 45

15 3

x=

39

5

x=

15 9 5

15 1 3

x= ﾷ

15x =

Assignment

• Pg 743 part 2.6 – #7, 11, 21, 28

• Pg 744 part 2.7– #7, 13, 15, 30

• Pg 744 part 3.1– Write out in steps– # 31, 41, 45, 47

• Pg 745 part 3.2– #1-5, 11