Question

Solve by Cross multiplication method Class 10
5x-2y= –1
15x+7y= 10

Answer 1

Answer:

Here a1=5 ,b1= -2, c1= -1

à2= 15 b2= 7 ç2=10

we know that

a1/a2=b1/b2=c1/c2

5/15= -2/7 = -1/10

then u will find that no terms will be matched so has unique solutions