Question

(9x+11y=22) (7x+4y=-33)

Answer 1

x = -11.

y = 11.

Explanation:

9x + 11y = 22

7x + 4y = -33

Multiply the first equation by -4 and the second by 11:

-36x - 44y = -88

77x + 44y = -363 Adding these 2 equations:

41x = -451

x = -451 / 41

x = -11.

Now plug x = -11 into the first equation

9(-11) + 11y = 22

-99 + 11y = 22

11y = 22 + 99

11y = 121

y = 11.