11x 15y 23 0 7x 2y 20 0
Asked by admin @ in Math viewed by 283 People
Solve 11x +15y +23 =0, 7x-2y-20 by elimination method
Answered by admin @
Hi dear sister your answer is given below.
In Elimination Method .
11x+15y+23=0
11x+15y= -23. (equ.1st)
7x-2y-20=0
7x-2y=20. (equ.2nd)
11x+15y=-23
7x-2y = 20
multiply by (2) in equ. 1st &( 15) in equ. 2nd we get.
22x+30y= -46. ( equ. 3rd)
105x-30y= 300. (equ. 4th)
_____________
127x=254
X=254/127
X = 2.
put the value of X in equ. 2nd
7x-2y=20
7(2)-2y =20. (X=2)
14-2y =20
-2y=20-14
-2y= 6
y= 6/-2
y=-3.
Your answer => X = 2 , Y= -3.
it will completely help.
u will understand
mark as brain list.
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