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Solve the system y=2x-6; y=-1/2x+4

1 Answer

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Answer:

x = 108/5 , y = 186/5

Explanation:

Solve the following system:

{y = 2 x - 6 | (equation 1)

y = 48 - x/2 | (equation 2)

Express the system in standard form:

{-(2 x) + y = -6 | (equation 1)

x/2 + y = 48 | (equation 2)

Add 1/4 Ă— (equation 1) to equation 2:

{-(2 x) + y = -6 | (equation 1)

0 x+(5 y)/4 = 93/2 | (equation 2)

Multiply equation 2 by 4:

{-(2 x) + y = -6 | (equation 1)

0 x+5 y = 186 | (equation 2)

Divide equation 2 by 5:

{-(2 x) + y = -6 | (equation 1)

0 x+y = 186/5 | (equation 2)

Subtract equation 2 from equation 1:

{-(2 x)+0 y = (-216)/5 | (equation 1)

0 x+y = 186/5 | (equation 2)

Divide equation 1 by -2:

{x+0 y = 108/5 | (equation 1)

0 x+y = 186/5 | (equation 2)

Collect results:

Answer: {x = 108/5 , y = 186/5

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