Question

$5x - 4y + 8 = 0 \\ 7x + 6y - 9 = 0$

Answer 1

Heya !!!


here is your answer !!!


FOllowed by simran


5 x - 4y + 8 ---------(1) x 7


and


7 x + 6y -9 = 0 ----------(2). x 5




equation multiply by. 7 and 5


we get


35x - 28y + 56 = 0
35 x + 30 y - 45 =0
- -. +
_________________

0 - 58 y = 101


y = - 101 / 58


on putting the value of y in equation 1 we get


5 x - ( 101 /58 ) + 8 = 0


5x - 9 .74 = 0


x = 9 .74 / 5




hope it helps you dear !!!


thanks !!

Answer 2

5x-4y +8 = 0
7x+6y-9 = 0
_______________________________________
Using Substitution Method:
5x-4y = -8-------->(i)
7x+6y= 9---------> (ii)

FROM Equation (i) we get
5x = -8+4y
x = -8+4y/5-------->(iii)
Putting the value of x in equation (ii)
7x+6y = 9
7(-8 +4y/5) +6y = 9
-56 +28y+30y = 45
58y = 45+56
y = 101/58
Putting y = 101/58 in equation (iii)
x= -8+4y/5
x = -8+4(101/58) / 5
x = -8+404/58/5
x = -12/58..

THANKS.
HOPE IT HELPS U☆☆