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maths.com/algebra
Linear Equation - Straight Line Equation - Simple Equation
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Example x + 2 = 5
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| x add 2 equals 5 |
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x | + | 2 | = | 5 | | |
| [1] INVERSE |
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of add 2 is subtract 2 |
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| - | 2 | | | | |
| [2] BALANCE |
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subtract 2 from other side |
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| | | | - | 2 | |
| [3] SIMPLIFY |
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both sides |
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| | x | = | 3 | | |
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Video Example x + 15 = 55
The music moves this along |
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Example x + 9 = 27
With Check
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| x add 9 equals 27 |
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x | + | 9 | = | 27 | | |
| [1] the inverse of add 9 is subtract 9 |
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| - | 9 | | | | |
| [2] subtract 9 from other side |
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| | | | - | 9 | |
| [3] consolidate both sides |
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| | x | = | 18 | | |
| CHECK |
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| [1] substitutiuon is |
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| | x | = | (18) | | |
| [2] do substitution |
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(18) | + | 9 | = | 27 | | |
| [3] consolidate |
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| | 27 | = | 27 | | |
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Video Showing Check
Example x + 2 = 6
Use the introduction to relax and focus |
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Video Showing Check
Example x + 5 = 3
This equation has a negative solution |
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