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Airida [17]
3 years ago
13

What is ? : x - 9 = 0.7x + 0.6x

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
3 0

Answer:

x= - 30

Step-by-step explanation:

x-9=0.7x+0.6

x-9=1.3x

x-9-1.3x=0

x-1.3x=9

x(1-1.3)=9

-0.3x=9

x= - 9/0.3

x= - 30

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The point of intersection of the two lines is at (1,-1)

<h3>System of equation</h3>

The given system of expression is shown below

x - 2y = 3

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The solution to the system of equation is the point of intersection

From equation 1

x = 3 + 2y

Substitute into 2

5(3+2y) + 3y = 2

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Substitute y = -1 into 3

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x = 3+(-2)

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Hence the point of intersection of the two lines is at (1,-1)

Learn more on system of equation here: brainly.com/question/25976025

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