The solution to the given system of equations is (x, y). What is the value of 3x - 5y? | SAT Systems of two linear equations in two variables Practice | Lumist
SAT Systems of two linear equations in two variables practice question
AlgebraMedium
x+4y=−3
4x−y=22
The solution to the given system of equations is (x,y). What is the value of 3x−5y?
Enter a number or fraction, e.g. 5, 0.5, 1/2
Explanation
From the first equation: x=−3−4y.
Substituting into the second equation: 4(−3−4y)−y=22,
which gives −12−16y−y=22, so −17y=34 and y=−2.
