Question

solve the equation by substit ution method 5x-4y+8=0\7x-6y-9=0
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Answer 1

Answer:

y=259/-182,x=5180/-729

Step-by-step explanation:

5x-4y+8=0-------------1

7x-6y-9=0--------------2

5x-4y=-8

5x=-8+4y

x=-8+4y/5---------------3

Substitute X=-8+4y/5 in2

7(8+4y/5)-6y-9=0

56+28y/35-6y-9=0

56+28y/35=9+6y

56+28y=(9+6y)35

56+28y=315+210y

28y-210y=315-56

-182y=259

y=259/-182

Substitute y=259/-182 in 3

x=-8+4(259/-182)/5

x=-8+1036/-729/5

x=5180/-729