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I need help solving this math problem my using substitution method

I need help solving this math problem my using substitution method-example-1
User Mring
by
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1 Answer

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we have the system

-3x-6y=45 --------> equation A

-5y=x -----> equation B

Solve by substitution method

substitute equation B in equation A

-3(-5y)-6y=45

solve for y

15y-6y=45

9y=45

y=5

Find out the value of x

equation B

x=-5y

substitute the value of y

x=-5(5)

x=-25

therefore

The solution is (-25,5)

User Valdeir Psr
by
7.7k points

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