Question

3x+4y=18 8x-9y=77 ayuuudaaaaa.....

Answer 1

1) x=8-4y/3

1) en 2)

8(8-4y/3)-9y=-77

64/3-32/3y-9y=-77

64/3-59y/3=-77

64/3+77=59y/3

295/3=59y/3

295=59y

y=295/59

y=5

1) 4(5)+3x=8

20+3x=8

3x=-12

x=-4