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Solving equations by adding and subtracting
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Slide 1

Sōp

Sōp

1. Simplify: -2(x + 3)

2. Simplify: 3[(5 + 72) 20]

= -2x - 6

= 3[(5 + 49) 20]

= 3[(54) 20]

= 3[34]

= 102

Slide 2

3.1

3.1

Solving Equations by Adding and Subtracting

Slide 3

t + 5

t + 5

=

11

-5

-5

t

=

6

+ 0

Example 1

Slide 4

Now you try

Now you try

y + 3

=

-2

-3

-3

y

=

-5

+ 0

Example 2

Slide 5

a - 4

a - 4

=

-10

+4

+4

a

=

-6

+ 0

Example 3

Slide 6

Now you try

Now you try

x - 6

=

-6

+6

+6

x

=

0

+ 0

Example 4

Slide 7

-4 + x

-4 + x

=

-30

+4

+4

x

=

-26

0+

Example 5

Slide 8

Now you try

Now you try

4.6 + m

=

0

-4.6

- 4.6

m

=

-4.6

0 +

Example 6

Slide 9

+ b

+ b

=

-

Example 7

Now try a more challenging problem

- +

0 +

b

=

1

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