How do I work out 3x + 65 = 7x + 13

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29-09-2014
Mathematics

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How do I work out 3x + 65 = 7x + 13

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AL2006 AL2006 · Answer 1 · 2014-09-29T21:52:16+02:00

AL2006 AL2006

29-09-2014

3x + 65 = 7x + 13

Here's one way:

Subtract 3x from each side: 65 = 4x + 13

Subtract 13 from each side: 52 = 4x

Divide each side by 4 : 13 = x

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