Question

If 4x + 5y = 10 and 5x +4y = 17, then the
value of x-Y is​

Answer 1

Answer:

x-y= 2.7646

Step-by-step explanation:

4x+5y=10

y= (10-4x)/5

put this value in equation

5x+4y=17

5x+4(10-4x)/5=17

X=45/17=2.6470

Put X=2.647 in equation

4x+5y=10

4(2.647)+5y=10

y= -0.1176

Therefore,

x-y = 2.6470-(-0.1176) = 2.7646