Solve for x:
5 - 3 x = 12 x + 4
Subtract 12 x from both sides:
5 + (-3 x - 12 x) = (12 x - 12 x) + 4
-3 x - 12 x = -15 x:
-15 x + 5 = (12 x - 12 x) + 4
12 x - 12 x = 0:
5 - 15 x = 4
Subtract 5 from both sides:
(5 - 5) - 15 x = 4 - 5
5 - 5 = 0:
-15 x = 4 - 5
4 - 5 = -1:
-15 x = -1
Divide both sides of -15 x = -1 by -15:
(-15 x)/(-15) = (-1)/(-15)
(-15)/(-15) = 1:
x = (-1)/(-15)
Multiply numerator and denominator of (-1)/(-15) by -1:
Answer: x = 1/15
