Question

plz can you solve this ​

Answer 1

Answer:

Letting x = present age

 

x + 12  will be my age 12 years from now.

3(x-4)  will be three times as old as I was 4 years ago

 

x+12 = 3(x-4)

Solve for x

 

x+12 = 3x - 12

subtract x from both sides

12 = 2x - 12

add 12 to both sides

24 = 2x

divide both sides by 2

12 = x

 

My present age is 12 years

 

Check:  x+12 = 3(x-4)

          12+12 = 3(12-4)

             24 = 3(8)

             24 = 24