Question 374087
1) 2x+y=13
2) 4x+2y=23
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Multiply equation 1 by 2.
2x+7y=13
2(2x+7y)=2(13)
4x+14y=26
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Let the result of above be equation 3.
3) 4x+14y=26
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Subtract equation 3 from 2.
 4x+14y=26
-4x+ 2y=23
 0x+12y=3
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From there, solve for y.
12y=3
  y={{{3/12}}}
  y={{{1/4}}}
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Substitute y={{{1/4}}} in equation 1 (any equation works here).
2x+y=13
2x+{{{(1/4)}}}=13
2x=12-{{{1/4}}}
x={{{(12-1/4)/2}}}
x={{{47/8}}}
x=5.875