Question

X-y=30 ,×+y=60 find × and y
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Answer 1

Answer:

x=15 and y= 45

Step-by-step explanation:

x-y=30

y=30+x

x+30+x=60

2x+30=60

2x=60-30

x=30÷2

x=15

y=30+x

y=30+15

y=45

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Answer 2

Answer:

x=45  y=15

Step-by-step explanation:

// Solve equation [2] for the variable  x  

 

 [2]    x = y + 30

// Plug this in for variable  x  in equation [1]

  [1]    (y +30) + y = 60

  [1]    2y = 30

// Solve equation [1] for the variable  y  

  [1]    2y = 30  

  [1]    y = 15  

// By now we know this much :

   x = y+30

   y = 15

// Use the  y  value to solve for  x  

   x = (15)+30 = 45  

Solution :

{x,y} = {45,15}