lulustar13 lulustar13

04-02-2019
Mathematics

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Solve this equation using substitution.

{4x + y = −2}
{4x + 6y = 44}

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mathecoach mathecoach

04-02-2019

Answer:

4x + y = −2 --> 4x = -y - 2

4x + 6y = 44

Substitute 4x in the 2. equation.

(-y - 2) + 6y = 44

5y - 2 = 44

5y = 46

y = 9.2

4x = -9.2 - 2

4x = -11.2

x = -2.8

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