Question

7x-9y=2 7x+8y=-15
solve the system explain your answer

Answer 1

Answer:

x= -1

y= -1

Step-by-step explanation:

multiplying equation 1 by -1

and then adding both eqns

by elimination method

-7x+9y=-2

7x+8y=-15

    17y=-17

y = -1

by putting y = -1 in eq 1 , we get

x= -1