PLEASE HELP ME!!!

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368

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{x-y=5

{4x+y=10

i need help with this system of linear equations using substitution. Please help!!! I need answers ASAP!!!

Guest Feb 16, 2015

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Best Answer

+118613

+5

x-y=5 SO x=5+y (1)

4x+y=10 (2)

Sub (1) into (2)

4(5+y)+y=10

20+4y+y=10

5y=-10

y=-2

now sub y=-2 back into (1) to find x

Melody Feb 17, 2015

1⁺⁰ Answers

+118613

+5

Best Answer

x-y=5 SO x=5+y (1)

4x+y=10 (2)

Sub (1) into (2)

4(5+y)+y=10

20+4y+y=10

5y=-10

y=-2

now sub y=-2 back into (1) to find x

Melody Feb 17, 2015

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