Question

If x/5-y/4=0 ,3x+1/2y=17 then x+y=?

Answer 1

Answer:

x+y=9

Step-by-step explanation:

By solving the above equations the values of x and y are 5,4 respectively.

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Answer 2

Answer:

x = 3.4125 aprrox. 3.41, y = 1.53

(x,y) (3.41,1.53)

x+y = 3.4125+1.53 = 4.9425 approx. 4.94

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Step-by-step explanation:

4x-5y / 20 = 0.3(mulitply top equation by 20 to remove the denominator)

3x+0.5y = 17

4x-5y = 6  (times 3)

3x+.5y = 17 (times 4)

12x-15y = 18

12x+2y = 68

-15y-27 = 18-68

= -15y-27 = -50

= -15y = -23

y = -23/-15

y = 1.53

12x -15(1.53) = 18

12x-22.95 = 18

12x = 18+22.95

12x = 40.95

x = 40.95/12 = 3.4125