The second would suggest that x equals the string "=3".
x=y
x equals 8
x + 3 = 2x 3 = x x cannot be 2
If the log of x equals -3 then x = 10-3 or 0.001or 1/1000.
12x = x + 3 11x = 3 x = 3/11
It is 1.2164
no.. x equals 11
3 x 3 + 4 x 8 = 9 + 32 ...
2.333333......... or, 2 and 1/3
If the question is, What x 3 equals 15? Then 5 x 3 = 15 If the question is, What is 15 x 3? Then 15 x 3 = 45
x = -3; y = 6; 6y/x = 6(6)/-3 = 36/-3 = -12