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Bello
18 September, 07:58
2a-1=19 solve. two step equation
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Kellie
18 September, 09:56
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2a - 1 = 19 ... add 1 to both sides
2a - 1 + 1 = 19 + 1 ... simplify
2a = 20 ... divide both sides by 2
(2/2) a = 20/2
1a (or just a) = 10
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Emery Downs
18 September, 11:53
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2a - 1 = 19
2a = 20
a = 10
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