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dedylja [7]
3 years ago
14

Let x be 3 4 + x + x + x = ?

Mathematics
1 answer:
IRINA_888 [86]3 years ago
7 0

Answer:

13

Step-by-step explanation:

We replace each X with a 3, so

4 + 3 + 3 + 3

which equals to 13

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What is the solution to the system of equations?
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Step-by-step explanation:

Let's solve your system by substitution.

−3x−8y=20;y=5x+19

Rewrite equations:

y=5x+19;−3x−8y=20

Step: Solve y=5x+19for y:

y=5x+19

Step: Substitute5x+19foryin−3x−8y=20:

−3x−8y=20

−3x−8(5x+19)=20

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Step: Substitute−4forxiny=5x+19:

y=5x+19

y=(5)(−4)+19

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Answer:

x=−4 and y=−1

 

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3 years ago
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