Question

for simultaneous equations in variables x and y, dx=49,dy=-63,d=-7 then what is​

Answer 1

Answer:

find the value of x and y , dx=49,dy=-63,d=-7

dx=49 ; d=-7

(-7)x=49

x=49/-7

x=-7

dy=-63;d=-7

(-7)y=-63

y=-63/-7y

y=9

therefore x=-7 and y=9