lexipoole lexipoole

02-04-2015
Mathematics

contestada

Y=2x-5
3x+8y+32=56
What does y and x equal?

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Panoyin Panoyin

03-04-2015

y = 2x - 5
3x + 8y + 32 = 56
3x + 8(2x - 5) + 32 = 56
3x + 8(2x) - 8(5) + 32 = 56
3x + 16x - 40 + 32 = 56
19x - 8 = 56
      + 8   + 8
   19x = 64
      19    19
   x = 3.4
y = 2(3.4) - 5
y = 6.8 - 5
y = 1.8
(x, y) = (3.4, 1.8)

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