Q. Solve using elimination.5x−y=65x−3y=−12(_____, _____)
Write Equations: Write down the system of equations to identify the strategy for elimination.5x−y=65x−3y=−12We can subtract one equation from the other to eliminate the variable x.
Subtract Equations: Subtract the first equation from the second equation to eliminate the variable x.(5x−3y)−(5x−y)=−12−6 This simplifies to:5x−3y−5x+y=−12−6
Combine Terms: Combine like terms.−3y+y=−12−6−2y=−18
Solve for y: Solve for y by dividing both sides by -2").\(\newline\$-2y / -2 = -18 / -2\)\(\newline\)\(y = 9\)
Substitute and Solve for \(x\): Substitute \(y = 9\) into one of the original equations to solve for \(x\). Using the first equation: \(5x − y = 6\) \(5x − 9 = 6\)
Isolate x Term: Add \(9\) to both sides to isolate the term with \(x\).\(\newline\)\(5x - 9 + 9 = 6 + 9\)\(\newline\)\(5x = 15\)
Final Solution: Divide both sides by \(5\) to solve for \(x\).\[\frac{5x}{5} = \frac{15}{5}\]\[x = 3\]
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