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maths.com/algebra
Linear Equation - Straight Line Equation - Simple Equation
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Example 4x = 8
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| x multiplied by 4 equals 8 |
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| | 4x | = | 8 | | |
| [1] the inverse of multiply by 4 is divide by 4 |
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| ÷ | 4 | | | | |
| [2] divide other side by 4 to keep balance |
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| | | | ÷ | 4 | |
| [3] consolidate both sides |
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| | x | = | 2 | | |
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Video Example 6x = 72
The music moves this along |
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Example 9x = 27
With Check
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| x multiplied by 9 equals 27 |
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| | 9x | = | 27 | | |
| [1] the inverse of multiply by 9 is divide by 9 |
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| ÷ | 9 | | | | |
| [2] divide the other side by 9 |
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| | | | ÷ | 9 | |
| [3] consolidate both sides |
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| | x | = | 3 | | |
| CHECK |
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| [1] substitutiuon is |
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| | x | = | (3) | | |
| [2] do substitution |
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| | 9(3) | = | 27 | | |
| [3] consolidate |
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| | 27 | = | 27 | | |
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Video Showing Check
Example 4x = 20
Use the introduction to relax and focus |
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Video Showing Check
Example 20x = - 140
This equation has a negative solution |
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Video Showing Check
Example - 4n = 28
This equation has a negative solution |
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