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Y=-5 8x+5y=-17 substitution

User Nscrob
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2 Answers

4 votes

Final answer:

To solve the system of equations using substitution method, substitute the given value of y into the second equation and solve for x.

Step-by-step explanation:

To solve the system of equations using substitution method, we substitute the given value of y into the second equation:

8x + 5(-5) = -17

Simplifying, we get:

8x - 25 = -17

Adding 25 to both sides gives:

8x = 8

Dividing by 8, we find:

x = 1

Therefore, the solution to the system of equations is x = 1 and y = -5.

User Effeffe
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4 votes


8x+5y=-17 when y is -5

Substitute for y with given value:


8x+5(-5)=-17


8x-25=-17

Add 25 to both sides:


8x-25+25=-17+25


8x=8

Divide both sides by 8:


(8x)/(8) =(8)/(8)


\fbox{x = 1}

User Donnie DeBoer
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7.1k points