Question

if 3 x+4y =16 and 3x-4y=4 find xy. Please answer as soon as possible

Answer 1

Answer:

5

Step-by-step explanation:

(4+4y)/3 = x 4+4y+4y = 4+8y=16 12=8y 12/8= 6/4 = 3/2 y= 1.5(4) = 6 +4  = 10

3x=10 10/3 = x x*y = 1.5 times 10/3 = 5

Answer 2

Answer:

x= 3.3

y=1.5

Step-by-step explanation: