Solve the following system of equations. 8x + 5y = -84 3x + y = -21 A. x = -12, y = -3 B. x = 5, y = -24.8 C. x = 12, y = -57 D. x = -3, y = -12
Solve the following system of equations.
8x + 5y = -84
3x + y = -21
A. x = -12, y = -3
B. x = 5, y = -24.8
C. x = 12, y = -57
D. x = -3, y = -12
The answer is D. x = -3 and y = -12
(1)8x+5y=−84(2)3x+y=−21|⋅5(2)15x+5y=−105(2)−(1)15x−8x+5y−5y=−105−(−84)15x−8x=−105+847x=−21|:7x=−33x+y=−213⋅(−3)+y=−21−9+y=−21y=−21+9y=−12
Solve the following system of equations.
8x + 5y = -84
3x + y = -21
A. x = -12, y = -3
B. x = 5, y = -24.8
C. x = 12, y = -57
D. x = -3, y = -12
The answer is D. x = -3 and y = -12
(1)8x+5y=−84(2)3x+y=−21|⋅5(2)15x+5y=−105(2)−(1)15x−8x+5y−5y=−105−(−84)15x−8x=−105+847x=−21|:7x=−33x+y=−213⋅(−3)+y=−21−9+y=−21y=−21+9y=−12