Solve the system of equations.

6x–5y=27

3x+5y=36
(1 point)
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1 answer

To solve the system of equations:

  1. \( 6x - 5y = 27 \) (Equation 1)
  2. \( 3x + 5y = 36 \) (Equation 2)

We can use the method of substitution or elimination. Here, we'll use the elimination method.

First, let's add the two equations to eliminate \( y \):

  • From Equation 1, we have:

    \( 6x - 5y = 27 \)

  • From Equation 2, we have:

    \( 3x + 5y = 36 \)

Next, we can add these two equations together:

\[ (6x - 5y) + (3x + 5y) = 27 + 36 \]

This simplifies to:

\[ 6x + 3x = 63 \]

\[ 9x = 63 \]

Now, divide both sides by 9:

\[ x = 7 \]

Next, we can substitute \( x = 7 \) back into one of the original equations to find \( y \). We'll use Equation 2:

\[ 3(7) + 5y = 36 \]

This simplifies to:

\[ 21 + 5y = 36 \]

Now, subtract 21 from both sides:

\[ 5y = 15 \]

Dividing both sides by 5 gives:

\[ y = 3 \]

So the solution to the system of equations is:

\[ (x, y) = (7, 3) \]

Thus, the solution is:

\[ \boxed{(7, 3)} \]