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Penelope Chaney
Mathematics
8 September, 22:16
How to solve 18 - 2 (x+7) = 8x-20-2/2
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Maddison Gentry
8 September, 22:30
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18-2x-14=8x-20-1
4-2x=8x-21
4+21=8x+2x
25=10x
25/10=x
5/2=x
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Paige Reeves
8 September, 22:34
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18-2 (x+7) = 8x-20-2/2
(distribute)
18-2x-14=8x-20-1
(add common terms together)
-2x+4=8x-21
(have term with x be alone on one side of the equation)
10x=25
(divide both sides by 10)
x=2.5
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