Question

3x+4y=64
2x+5y=66

o resultado e (10,8)

Answer 1

3x+4y=64 ×(-2)

2x+5y=66 ×(3)

{-6x-8y=-128

+{6x+15y=198

7y=70

y=70/7

y=10

2x+5y=66

2x+5.10=66

2x+60=66

2x=66-60

2x=6

x=6/2

x=3

S={3,10}