Question

If, x=y-x, find the value of y from the equation y-(x-y/2)=4/5(y-x)​

Answer 1

Answer:

Solution

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Correct option is B)

Given System of Equations are:

2x+y=23 ...(1)

4x−y=19 ...(2)

Now adding both the equation will have:

6x=42

x=7

Now substituting x=7 in in equation (1)

⇒2(7)+y=23

⇒14+y=23

⇒y=9

Now substituting x=7 and y=9 in 5y−2x

⇒5(9)−2(7)

⇒45−14

⇒31

Now Substituting Now substituting x=7 and y=9 in

x

y

−2

⇒

7

9

−2

⇒

7

9−14

⇒

7

−5

Answer 2

Answer:

y-(x-y/2)=4/5(y-x)

y-(-x/2)=4/5x

(2y+x)/2=4/5x

10xy+5x²=8

5x²+10xy-8=0