brookeee brookeee

14-03-2016
Mathematics

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Solve 3x - x + 2 = 12

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apologiabiology apologiabiology

14-03-2016

remember you can do anything to an equation as long as you do it to both sides (except divide by 0)

add like terms
3x-x=3x-1x=2x

so
3x-x+2=12
2x+2=12
subtract 2 from both sides
2x=10
divide both sides by 2
x=5

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