Question

please give me this answer

5x-4y=-8
7x+6y=9​

Answer 1

5x-4y=-8 eq.1

7x+6y=9 eq.2

5x=-8+4y

x= -8+4y/5

substitute x in EQ. 2

7(-8+4y)/5+6y=9

-56+28y/5=9-6y

-56+28y=5(9-6y)

-56+28y=45-30y

-56-45= -30y-28y

-101= -58y

y= 101/58

substitute y in eq. 1

5x-4(101/58)=-8

5x-404/58=-8

5x= -8-404/58

5x= -464-404/58

290x= -868

x=-868÷290

x=2.99

therefore. x=2.99 and y= 1.74