Use the substitution method to find all solutions of the system of equations.

Algebra
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Use the substitution method to find all solutions of the system of equations.
 
x − y = 1
2x + 2y = 6
(xy) = 
  
Apr 20th, 2015

x=y+1 from equation 1. 2(y+1)+2y=6 from equation 2. 4y+2=6, 4y=4, y=1. Substituting back into 1, we get x=2.

Apr 20th, 2015

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