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# solving equations that involve fractions watch

1. how do I solve an equation that involves fractions on both sides, each of which having very different denominators? e.g. 7n-100/n+220 = 15/69 (this is the current question I'm stuck on but I've never been able to do these kinds of things.) any help will be really appreciated
2. I'd cross multiply.

So 7n-100/n+220 = 15/69 becomes:
69(7n-100) = 15(n+220)
Then expand and solve as a normal linear equation.

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Updated: March 2, 2018
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