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puteri [66]
2 years ago
10

Solve each system of linear equations using the elimination mehod

Mathematics
2 answers:
Oksana_A [137]2 years ago
4 0

Answer:

solution:  x = 4, y = 1 or (4, 1)

Step-by-step explanation:

To solve the system of linear equations using the elimination method, simply add both equations together (since the coefficeints of x have opposite signs):

-8x + 10y = -22

<u>+ 8x -  15y =  17 </u>

       - 5y  = -5

Divide both sides by -5 to solve for y:

\frac{-5y}{-5} = \frac{-5}{-5}

y = 1

Next, substitute the value of y into one of the equations to solve for x:

-8x + 10y = -22

-8x + 10(1) = -22

-8x + 10 = -22

Subtract 10 from both sides

-8x + 10 - 10 = -22 - 10

-8x = -32

Divide both sides by -8 to solve for x:

\frac{-8x}{-8} = \frac{-32}{-8}

x = 4

Therefore, the solutions to the given systems of linear equations are: x = 4, y = 1 or (4, 1).

Virty [35]2 years ago
3 0

Answer: y = 1 and x = 4

Step-by-step explanation:

-8x + 10y = -22

8x - 15y = 17

-----------------------

- 5y = -5 Add the two equations to eliminate x

y = 1 Solve for y

=====

8x - 15y = 17 (y = 1) Use y=1 in either equation

8x - 15 = 17

8x = 32

x = 4 Ta da

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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For 400 copies advertiser is charged = $82

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==================

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