3x+5y=2

y=2/3x-14/3

1 answer

You have two equations here:

  1. \( 3x + 5y = 2 \)
  2. \( y = \frac{2}{3}x - \frac{14}{3} \)

To solve this system of equations, you can either substitute the second equation into the first or set them equal to each other. I will substitute the second equation into the first.

Starting with the first equation:

\[ 3x + 5y = 2 \]

Substituting \( y \) from the second equation:

\[ 3x + 5\left(\frac{2}{3}x - \frac{14}{3}\right) = 2 \]

Now, distribute the \( 5 \):

\[ 3x + \frac{10}{3}x - \frac{70}{3} = 2 \]

To eliminate the fractions, multiply the entire equation by \( 3 \):

\[ 3(3x) + 3\left(\frac{10}{3}x\right) - 3\left(\frac{70}{3}\right) = 3(2) \]

This simplifies to:

\[ 9x + 10x - 70 = 6 \]

Combine like terms:

\[ 19x - 70 = 6 \]

Now, add \( 70 \) to both sides:

\[ 19x = 76 \]

Now, divide by \( 19 \):

\[ x = 4 \]

Now we can substitute \( x = 4 \) back into the second equation to find \( y \):

\[ y = \frac{2}{3}(4) - \frac{14}{3} \]

This simplifies to:

\[ y = \frac{8}{3} - \frac{14}{3} = \frac{-6}{3} = -2 \]

So, the solution to the system of equations is:

\[ \boxed{(4, -2)} \]