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

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

 
x − y = 1
4x + 3y = 32
(xy) = 
  
Apr 20th, 2015

x- y = 1

so, x= y +1

substitute this value in the other equation 4x + 3 y =32

so 4(y + 1 ) + 3 y =32

 4 y + 4 + 3y =32

 7y = 28

y = 4....................................................

substitute this value in x- y = 1

so, x - 4 =1

x=5............................................


ANSWERS ARE    x=5.

                               y = 4.

Apr 20th, 2015

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