aim: solving one-step equations - pleasantville high school

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Aim: Solving One-Step Equations Solving Equations Solving equations is just a matter of undoing operations that are being done to the variable. The task is always to isolate the variable get the variable ALONE on one side of the equal sign. Remember when solving equations to"keep the equation balanced" by making the same changes to BOTH sides of the equal sign. Example 1: Solve this equation for x: x+3=8 3 3 x=5 x=5 Check: x + 3 = 8 5 +3=8 8=8 Check: 3x 4 = 11 3(5) 4 = 11 15 4 = 11 11 = 11 Try: t +5=8 6

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Aim:

Solving One-Step Equations

Solving Equations

Solving equations is just a matter of undoing  operations that arebeing done to the variable.  The task is always to isolate the variable­­ get the variable ALONE on one side of the equal sign.

Remember when solving equations to "keep the equation balanced" by making the same changes to BOTH sides of the equal sign.

Example 1:  Solve this equation for x:

x + 3 = 8   ­ 3   ­ 3

x = 5

x = 5

Check:  x + 3 = 8             5 + 3 = 8                8 = 8

Check:   3x ­ 4 = 11             3(5) ­ 4 = 1115 ­ 4 = 11    11 = 11Try:

 t  + 5 = 8 6

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Example 1

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Example 2

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Example 3

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Journal p. 6