Solve the system of equations 5, x, plus, 8, y, equals, minus, 145x+8y=−14 and minus, 3, x, minus, 2, y, equals, 0−3x−2y=0 by combining the equations.

Below, two sets of the two equations are shown. The first set has input boxes in front of each equation to put a number to multiply it by. When you enter a number, the corresponding equation below changes to be the result of the multiplication. Under the second set, a resulting equation is shown with input boxes for the coefficients and constant. Then, there is a "try" button. When you press the try button, if your answer is correct, it will be placed on the page and a new question will appear with a new input box. This process will continue until the final answer area appears with the submit button.
left parenthesis, 5, x(5x plus, 8, y+8y equals= minus, 14, right parenthesis−14)
left parenthesis, minus, 3, x(−3x minus, 2, y−2y equals= 0, right parenthesis0)
5, x5x plus, 8, y+8y equals= minus, 14−14
minus, 3, x−3x minus, 2, y−2y equals= 00
0
0xx plus+
0
0yy equals=

1 answer

To solve the system of equations

  1. \( 5x + 8y = -14 \)
  2. \( -3x - 2y = 0 \)

we will use the method of elimination (combining the equations). To make the calculations easier, we will first express one equation in a form that allows us to eliminate one variable.

Step 1: Rearranging the second equation to express \(y\):

From the second equation, we can express \(y\) in terms of \(x\):

\[ -3x - 2y = 0 \implies 2y = -3x \implies y = -\frac{3}{2}x \]

Step 2: Substitute \(y\) into the first equation:

Now that we have \(y\) in terms of \(x\), we can substitute it into the first equation:

\[ 5x + 8\left(-\frac{3}{2}x\right) = -14 \]

Step 3: Simplifying the equation:

\[ 5x - 12x = -14 \] \[ -7x = -14 \]

Step 4: Solve for \(x\):

\[ x = \frac{-14}{-7} = 2 \]

Step 5: Substitute \(x\) back to find \(y\):

Now substitute \(x = 2\) back into the equation for \(y\):

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

Final Solution:

The solutions to the system of equations are:

\[ x = 2, \quad y = -3 \]

Thus, the ordered pair that solves the system is \((2, -3)\).