Question

X upon 2 + 1 upon 3 is equals to X upon 3 + 3 upon 7

Answer 1

x/2 + 1/3 = x/3 + 3/7

x/2 - x/3 = 3/7 - 1/3

(3x - 2x)/6 = (9 - 7)/21

x/6 = 2/21

x = 6*2/21 = 12/21 = 4/7

x = 4/7

Answer 2

x/2+1/3 = x/3 + 3/7

3x+2/6 = 7x+9/21

3x+2/2= 7x +9 /7

21x +14= 14x +18

7x = 4

x= 4/7