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2 years ago

Solve the system by substitution. y = 3x y = -4x – 49

Mathematics

1 answer:

Alex787 [66]2 years ago

6 0

Answer:

Step-by-step explanation:

Substitute 3x into y=-4x-49

y=−4x−49

3x=−4x−49

3x+4x=−4x−49+4x(Add 4x to both sides)

7x/7=−49/7

(Divide both sides by 7)

x=−7

Step: Substitute−7forxiny=3x:

y=3x

y=(3)(−7)

y=−21(Simplify both sides of the equation)

Answer:

x=−7 and y=−21

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Answer:

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Step-by-step explanation:

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2 years ago

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1 year ago

5x-3y when x=7 and y=-8

I am Lyosha [343]

5 (7) - 3 (-8)

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Because two negatives equal a positive the subtraction sign will change into an addition sign.

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So your answer will be 59.

Hope this helped :)

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