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17 votes
17 votes
–6x + 2y = 16 -7x + 6y = 26

User Adrian Modliszewski
by
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1 Answer

15 votes
15 votes

Answer

x = -2

y = 2

Step-by-step explanation

This is a simultaneous equation

-6x + 2y = 16

-7x + 6y = 26

Multiply the first equation by 3 and the second equation by 1

-6x + 2y = 16

-7x + 6y = 26

becomes

-18x + 6y = 48

-7x + 6y = 26

Subtract equation 2 from equation 1

-18x + 6y = 48

-7x + 6y = 26

_______________

-18x - (-7x) + 6y - 6y = 48 - 26

-18x + 7x = 22

-11x = 22

Divide both sides by -11

(-11x/-11) = (22/-11)

x = -2

We can then solve for y using any of the two original equations

-6x + 2y = 16

-6 (-2) + 2y = 16

12 + 2y = 16

2y = 16 - 12

2y = 4

Divide both sides by 2

(2y/2) = (4/2)

y = 2

Hope this Helps!!!

User Fermion Portal
by
2.8k points
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