Answer:
A.
5x-2y= -6-------(1)
2x-y= 1------(2)
Equation (1) - 2 × Equation (2)
→5x-2y-4x+2y= -6 -2
Adding and Subtracting like terms
→x= - 8
Putting the value of x in equation 2
→2×(-8) -y =1
→-16 -y=1
Adding 16 on both sides of equation
→-y=16+1
→y = -17
x= -8, and y= -17
B
2x + 3y = 432------(3)
5x – 2y = 16---------(4)
2×Equation (3) + 3 × Equation (4)
→4x+6y+15x-6y=864+48
→19 x=912
Dividing both sides by 19, we get
x=48
Putting the value of x, in equation (3)
2× 48+3y=432
96+3y=432
3y=432-96
3y=336
Dividing both sides by,3 we get
y=112
Solution set is equal to, x=48,y=112