Thursday, December 4, 2014

Solve the system of equations by any methods. 2x-3y+1=0 x+y-2=0

The system can be solved either using elimination method,
or substitution method.


We'll choose elimination method to
remove y variable. For this reason we'll multiply the 2nd equation by
3:


3x + 3y - 6 = 0


We'll add
this equation to the 1st equation of the system:


3x + 3y -
6 + 2x - 3y + 1 = 0


We'll eliminate variable
y:


5x - 5 = 0


We'll isolate 5x
to the left side, adding 5 both sides:


5x =
5


x = 1


We'll replace x by 1
within the second equation, to determine y:


1 + y - 2 =
0


y = 2 - 1


y =
1


The solution of the system of independent
equations is (1 ; 1).

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