Q. Solve the following system of equations.−5x+4y=3x=2y−15x=y=
Write Equations: First, let's write down the system of equations we need to solve:−5x+4y=3x=2y−15We will use the substitution method to solve this system. Since the second equation gives us x in terms of y, we can substitute x in the first equation with the expression from the second equation.
Substitute x: Substitute x=2y−15 into the first equation:−5(2y−15)+4y=3Now, distribute the −5 into the parentheses:−10y+75+4y=3
Combine Terms: Combine like terms:−10y+4y+75=3−6y+75=3Now, we will isolate y by moving 75 to the other side of the equation:−6y=3−75
Isolate y: Calculate the right side of the equation:−6y=−72Now, divide both sides by −6 to solve for y:y=−6−72y=12
Calculate y: Now that we have the value of y, we can substitute it back into the second equation to find x: x=2y−15 x=2(12)−15