Question

solve by substitution method:
x+y=a-b
ax-by=a^+b^​

Answer 1

Step-by-step explanation:

x= a-b-y ....(.1)

a(a-b-y)=a+b

a² -ab-ay=a+b

ay=a²-ab-a-b

y=a-b-1-b/a.......value of y we got

now for value of x ..we use eq. 1 as:

x= a-b-a+b+1+b/a=1+b/a

hence x is equal to 1+b/a