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
4x + 3y = 18
(xy) = 
  
Apr 21st, 2015

x =1+y

we put this in second equation :

4 + 4y +3y = 18

7y = 14

y = 2

x =1+2 = 3

(x,y) = (3,2)

Apr 21st, 2015

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Apr 21st, 2015
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