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How Do You Solve an Inequality Using Subtraction?
Solve this inequality for m: 12.75 + m ≤ 22
Summary
- 'm' is a variable
- '
≤ ' means 'less than or equal to' - If we subtract 12.75 from the left side, then we have to subtract it from the right side
- 12.75 - 12.75 on the left is 0, which just leaves 'm' on the left
- 22 minus 12.75 is just 9.25

Notes
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- 'm' is a variable
- We want to get 'm' by itself to solve for 'm'
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- 'm' is a variable
- We want to get 'm' by itself to solve for 'm'
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- Subtraction is the opposite of addition
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- Subtraction is the opposite of addition, so we will want to subtract 12.75 to get 'm' by itself
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- Subtraction is the opposite of addition
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- 'm' is a variable
- The 12.75's cancel out on the left side leaving just 'm'
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- On the right hand side: 22 minus 12.75 is equal to 9.25
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- 'm' is a variable
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Less than or equal to is symbolized with '
≤ '
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- We can open up our braces with the { symbol
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- The 'such that' symbol is the vertical bar, |
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'
≤ ' is an inequality symbol that means less than or equal to - 'm' is a variable
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'
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- We close are braces by using the } symbol