solve the system of equations

x-3y=-10
3x+2y=14

1 answer

To solve the system of equations

  1. \( x - 3y = -10 \) (Equation 1)
  2. \( 3x + 2y = 14 \) (Equation 2)

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

First, we'll solve Equation 1 for \( x \):

\[ x = 3y - 10 \]

Next, we'll substitute this expression for \( x \) into Equation 2:

\[ 3(3y - 10) + 2y = 14 \]

Now, distribute the 3:

\[ 9y - 30 + 2y = 14 \]

Combine like terms:

\[ 11y - 30 = 14 \]

Next, add 30 to both sides:

\[ 11y = 44 \]

Now, divide by 11:

\[ y = 4 \]

Now that we have the value of \( y \), we can substitute it back into the expression we found for \( x \):

\[ x = 3(4) - 10 \]

\[ x = 12 - 10 \]

\[ x = 2 \]

So the solution to the system of equations is:

\[ x = 2, \quad y = 4 \]

We can write the solution as the ordered pair:

\[ (2, 4) \]

To confirm, we can substitute \( x = 2 \) and \( y = 4 \) back into the original equations:

  1. For Equation 1: \[ 2 - 3(4) = 2 - 12 = -10 \quad \text{(True)} \]

  2. For Equation 2: \[ 3(2) + 2(4) = 6 + 8 = 14 \quad \text{(True)} \]

Both equations are satisfied. Thus, the solution is confirmed:

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