Today in class, we started off by practicing one step algebraic equations.
3+a=10 b-2=6 3c=9 D=2
3+a-3=10-3 b-2+2=6+2 3 3 5
a=7 b=6 c=3 Dx5=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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