MATH SOLVE

2 months ago

Q:
# Find the solution of this system of equations -4x-y=-18 , -7x+y=-4

Accepted Solution

A:

Answer: (x, y) = (2, 10)Step-by-step explanation:Adding the two equations will eliminate the y-variable: (-4x -y) +(-7x +y) = (-18) +(-4) -11x = -22 . . . . . simplify x = 2 . . . . . . . . . divide by -11__Put this into the first equation to find y: -4·2 -y = -18 -8 +18 = y = 10 . . . . . add 18+yThe solution is (x, y) = (2, 10).