3x-5y=19 and -7x-3y=-1 by substituting method
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Step-by-step explanation:
3x-5y=19
3x=19+3y
x=(19+3y)/3 ------i
-7x-3y=-1
-(19+3y)/3 -3y =-1
-19/3 -3y/3 -3y =-1
-y-3y= -1+19/3
-4y=-3+19 / 3
-4y =16/3
y = - 16 / 3*4
y =- 4 /3
putting the value of y
x=(19+3y)/3
= (19+3*(-4/3)) / 3
=19-4 / 3
= 15/3
=5
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