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1) Solve X + 16 = 17

X + 16. =. 17. 1) Solve X + 16 = 17. Think of this equation as a balance scale. Key Terms. ﻣﺘﻐﻴﺮ. Variable. In the problem X + 5 = 8 , X is the variable. ﺳﺎﻟﺐ اﻟﻌﺪد. Opposite. Opposites: tall, short; heavy, light; addition, subtraction; multiplication, division. Isolate. عزل.

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1) Solve X + 16 = 17

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  1. X + 16 = 17 1) Solve X + 16 = 17 Think of this equation as a balance scale.

  2. Key Terms ﻣﺘﻐﻴﺮ Variable In the problem X + 5 = 8, X is the variable. ﺳﺎﻟﺐ اﻟﻌﺪد Opposite Opposites: tall, short; heavy, light; addition, subtraction; multiplication, division Isolate عزل In the problem x = y + 2, the X is isolated.

  3. 1) Solve X+ 16 = !7 To solve, you must isolatethe variable. What number is on the same side as X? 16 To get X by itself (isolate), we must undo the “add 16”. What is the opposite of addition? Subtract 16

  4. 1) Solve X + 16 = 17 - 16 -16 X = 1 1+ 16 = 17 • Draw “the river” to separate the equation into 2 sides • Subtract 16 from both sides • Check your answer

  5. Answer Now 2) Solve X + 2 = 15What is your first step? • Add 2 to both sides • Subtract 2 from both sides • Add 15 to both sides • Subtract 15 from both sides

  6. 2) Solve x + 2 = 15 - 2 - 2 x = 13 13+ 2 = 15 • Draw “the river” to separate the equation into 2 sides • Subtract 2 from both sides • Check your answer On homework and tests, be sure to check your work!! There is no reason why you should miss a problem!

  7. 3) Solve 8 = X - 3 + 3 + 3 11= X 8 = 11 - 3 • Draw “the river” to separate the equation into 2 sides • Add 3 to both sides • Check your answer

  8. Independent Practice Answers X – 4 = 8 X = 12 2 = X - 3 X = 5 X + 10 = 82 X = 72 18 = X + 9 X = 9

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