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Solve the following system of equations.

{:[-5x+4y=3],[quad x=2y-15],[x=],[y=]:}

Solve the following system of equations.\newline5x+4y=3x=2y15x=y= \begin{array}{l} -5 x+4 y=3 \\ \quad x=2 y-15 \\ x= \\ y= \end{array}

Full solution

Q. Solve the following system of equations.\newline5x+4y=3x=2y15x=y= \begin{array}{l} -5 x+4 y=3 \\ \quad x=2 y-15 \\ x= \\ y= \end{array}
  1. Write Equations: First, let's write down the system of equations we need to solve:\newline5x+4y=3-5x + 4y = 3\newlinex=2y15x = 2y - 15\newlineWe will use the substitution method to solve this system. Since the second equation gives us xx in terms of yy, we can substitute xx in the first equation with the expression from the second equation.
  2. Substitute xx: Substitute x=2y15x = 2y - 15 into the first equation:\newline5(2y15)+4y=3-5(2y - 15) + 4y = 3\newlineNow, distribute the 5-5 into the parentheses:\newline10y+75+4y=3-10y + 75 + 4y = 3
  3. Combine Terms: Combine like terms:\newline10y+4y+75=3-10y + 4y + 75 = 3\newline6y+75=3-6y + 75 = 3\newlineNow, we will isolate yy by moving 7575 to the other side of the equation:\newline6y=375-6y = 3 - 75
  4. Isolate y: Calculate the right side of the equation:\newline6y=72-6y = -72\newlineNow, divide both sides by 6-6 to solve for y:\newliney=726y = \frac{-72}{-6}\newliney=12y = 12
  5. Calculate y: Now that we have the value of yy, we can substitute it back into the second equation to find xx:
    x=2y15x = 2y - 15
    x=2(12)15x = 2(12) - 15
  6. Substitute yy: Calculate the value of xx:x=2415x = 24 - 15x=9x = 9