Equations

8
Equati ons

Transcript of Equations

Page 1: Equations

Equations

Page 2: Equations

Equations

true equations

false equations

Unknown equations

Page 3: Equations

Equations

1. 35 ĭ 7 = 5 2. 25 + 12 ≠ 25 ĭ 123. 7 ĭ 8 > 50 4. 20 + 17 = + 20

The symbol “ = ” is read as is equal to or equals

Page 4: Equations

is equal toequals

Page 5: Equations

• 1. 35 ĭ 7 = 5 2. 25 + 12 ≠ 25 ĭ 12

• 3. 7 ĭ 8 > 50 4. 20 + 17 = + 20

• There is = from 1 and 4 we call “ equation”

Page 6: Equations

Exercise1 1. 11 × 12 = 1322. 14 + 8 < 20 + 53. 23 – 18 ≠ 4. 100 55. 25 + ×

Page 7: Equations

True equation1) 1 year = 12 months2) 60 minutes = 1 hour3) 1 week = 7 days4) 1 year = 120 days5) 45 + 89 – 12 = 122

True equation False equation

Page 8: Equations

Equations with unknownX + 15 = 30

46 – A = 22

D 8 = 14

unknown

unknown

unknown

The unknown is called variable


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