Today in class, we started off by practicing one step algebraic equations.

3+a=10 b-2=6

__3c__=__9____D__=23+a-3=10-3 b-2+2=6+2 3 3 5

a=7 b=6 c=3

__D__x5=2x5 3+a=10 b-2=6 3c=9 5

3+7=10 8-2=6 3(3)=9 D=10

10=10 6=6 9=9

__D__=2 5

__10__=2

5

2=2

Solving two step algebraic equations

*Dude pays $19 for 2 t-shirts and a pair of sunglasses.

How much does dude pay for each t-shirt?

If sunglasses cost $7.00 how much are the t-shirts?

Write an equation

2t+7=19

2t+7-7=19-7 Reverse Order of Operations

__2t__=

__12__

2 2

t=6

2t+7=19

2(6)+7=19

12+7=19

19=19

Chick saw a sign saying buy two pants and get socks for $2 a pair. If she pays $30 for 2 pants and 4 pairs of socks. What is the price of a pair of pants?

Model using blocks on a scale.

P=pants Socks cost $8

2p+8=30

-8 -8

__2p__=

__22__

2 2

p=11

2p+8=30

2(11)+8=30

30=30

H.W.

1. 3w+3=6

2. 2n+4=10

__Click Here__to learn more about solving two step algebraic equations

Sorry about the first part. The computer messed it up. Sorry.

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ReplyDelete非常感謝~3Q~....................................................

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ReplyDelete非常感謝~3Q~....................................................

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