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ludmilkaskok [199]
3 years ago
6

Need help with my school

Mathematics
1 answer:
Akimi4 [234]3 years ago
8 0

Answer:

21

Step-by-step explanation:

Put them equal to eachother

(10x-29)=(8x+3)

2x=42

x=21

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Answer:

-3.5

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7 0
3 years ago
​ y=−8x−3 x+y=7 ​ Is (3,4)(3,4)left parenthesis, 3, comma, 4, right parenthesis a solution of the system? Choose 1 answer: Choos
kirill [66]

Given:

The system of equation is

y=-8x-3

x+y=7

To find:

Whether (3,4) is a solution of the given system or not.

Solution:

We have,

y=-8x-3          ...(i)

x+y=7            ...(ii)

Putting the value of y in (ii) from (i), we get

x+(-8x-3)=7

x-8x-3=7

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Divide both sides by -7.

x=\dfrac{10}{-7}

x=-\dfrac{10}{7}

Putting x=-\dfrac{10}{7} in (i), we get

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