For elimination method the 1st question is Solve the system of equations - 6x-5y=-12 and - 8x-5y=4 by combining the equations.

Question

Ishaan Yu

Mathematics

12 July, 01:12

For elimination method the 1st question is Solve the system of equations - 6x-5y=-12 and - 8x-5y=4 by combining the equations.

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Answers (1)

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Georgia Castaneda · Answer 1

Eliminate y's

times first equation by - 1 and add to 2nd

6x+5y=12

-8x-5y=4 +

-2x+0y=16

-2x=16

divide both sides by - 2

x=-8

sub back

6x+5y=12

6 (-8) + 5y=12

-48+5y=12

add 48 to oth sides

5y=60

divide both sides by 5

y=12

x=-8

y=12

(-8,12)