Final answer:
x is approximately equal to 2.4.
Step-by-step explanation:
To solve for x, we have the equations:
5x + 7 = 1 + 19
5x = 19 - 7
5x = 12
x = 12/5
x = 2.4
Therefore, x is approximately equal to 2.4. None of the given options (a, b, c, d) match the value of x.