Question

solve the system of equations.

• 5x + 4y = 3

x = 2y - 15
x =

y =

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Explanation:

Step1: Substitute \( x = 2y - 15 \) into \( -5x + 4y = 3 \)

Substitute \( x \) in the first equation: \( -5(2y - 15) + 4y = 3 \)

Step2: Simplify the equation

Expand: \( -10y + 75 + 4y = 3 \)
Combine like terms: \( -6y + 75 = 3 \)
Subtract 75: \( -6y = 3 - 75 = -72 \)
Divide by -6: \( y = \frac{-72}{-6} = 12 \)

Step3: Find \( x \) using \( x = 2y - 15 \)

Substitute \( y = 12 \): \( x = 2(12) - 15 = 24 - 15 = 9 \)

Answer:

\( x = 9 \)
\( y = 12 \)