Question

Solve using cross multiplication method x+y=7 and 2x-3y=11

Answer 1

X+Y=7/2x-3y=11
11(x+y)=7(2x-3y)
$11x + 11y = 14x - 21y$
11x-14x = 21y-11y
$- 4x = 10y$
hope its right

Answer 2

X+Y = 7
X+Y-7 = 0
and,
2X-3Y = 11
2X-3Y-11 = 0


Here,
a1 = 1 , b1 = 1 , c1 = -7
a2 = 2 , b2 = -3 , c2 = -11

Therefore,
X = b1c2-b2c1/a1b2-a2b1
and,
Y = c1a2-c2a1/a1b2-a2b1
PUT ALL THE VALUES IN X AND Y ...
U WILL GET THE VALUE OF X AND Y....

THANK YOU.....