x+10/15=2/3x x=???
x+10/15=2/3x
Subtract 2/3 x from both sides
1/3 x + 10/15 = 0 Note 10/15 = 2/3 therefore
1/3 x + 2/3 = 0 multiply through by 3
x + 2 = 0 so x = -2