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[newb] simple equation substitutions

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  • Subject: [mg128535] [newb] simple equation substitutions
  • From: Neal Becker <ndbecker2 at gmail.com>
  • Date: Thu, 1 Nov 2012 03:19:28 -0400 (EDT)
  • Approved: Steven M. Christensen <steve@smc.vnet.net>, Moderator
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{y == x + 2, x == 7}

Solve[%, y]

-> {}

What I expected to happen is have x->7 applied to y == x+2.

My real plan is to develop a list of (a lot more complicated) expressions that will have repeated substitutions applied.

Why didn't the above work and/or what should I do instead?



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