4187767
Description
Mind Map by christy.durr, updated more than 1 year ago
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Created by christy.durr
almost 9 years ago
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Solving a System of Equations
- Addition
- x+y=15 and x-y=3
- added together we get 2x+0y=18
- x=9
- 9+y=15
- y=6
- y=6
- 9+y=15
- x=9
- added together we get 2x+0y=18
- x+y=15 and x-y=3
- Subtraction
- x+y=15 and x-y=3
- subtract and we get 0x+2y=12
- y=6
- x+6=15
- x=9
- x=9
- x+6=15
- y=6
- subtract and we get 0x+2y=12
- x+y=15 and x-y=3
- Subsitutition
- x+y=15 and x-y=3
- x=y+3
- (y+3)+y=15
- 2y=12
- y=6
- x-6=3
- x=9
- x=9
- x-6=3
- y=6
- 2y=12
- (y+3)+y=15
- x=y+3
- x+y=15 and x-y=3
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