Question

solve the pair of equation x-y=1 and x-2y=-2 by using substitution method​

Answer 1

Answer:

x=-2

y=-3

Step-by-step explanation:

x-y=1

x=1+y→1

x-2y=-2

put value of x from from 1

1+y=-2

y=-3

put value of y in. eqn 1

x=1+(-3)=-2