4 years ago

-5x-4y=15 6x+8y=-18 Solve each system by elimination

Mathematics

2 answers:

grandymaker [24]4 years ago

4 0

Answer:

x = -3

y = -3x/4-9/4

puteri [66]4 years ago

3 0

1) Multiply top equation by 2 -> -10x-8y=30

2) Add both equations:

-10x-8y=30

+ 6x+8y=-18

__________

-4x=12

3) Divide both sides by -4 -> x=-3

4) Plug value of x into either equation:

6(-3)+8y=-18

-18+8y=-18

8y=0

y=0

So x=-3 and y=0

Hope this helped!

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