12.07.2015 Views

Math PowerPoint

Math PowerPoint

Math PowerPoint

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Addition Axiom (Truth)• You add or subtract the same number or expression to eachside of an equation• X – 15 = 30• X – 15 + 15 = 30 + 15• X = 45• Practice:• W – 4 = 8• M – 12 = 14• Y – 9 = 21

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