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| Math Central | Quandaries & Queries |
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solve y=4x and x+y=5 |
Hi Anthony,
Take the first equation (y = 4x) and substitute the 4x in for y in the second equation (x + y = 5). You should get x + 4x = 5. Gather like terms and finish solving for x. When you have x, you can use it to find y.
Sara Ulmer
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