Final answer:
To find the value of x, substitute the given values of A, B, and C into the equation and solve for x.
Step-by-step explanation:
To find the value of x, we need to find the equation that relates A, B, and C. From the given information, we have A = 3x, B = 2x + 4, and C = 5x + 6. We can substitute these values into the equation Sx = Ax - 3Bx + Cx, which gives us:
Sx = 3x - 3(2x + 4) + (5x + 6)
Simplifying this equation, we get:
Sx = 3x - 6x - 12 + 5x + 6
Combining like terms, we have:
Sx = 2x - 6
Now, we can solve for x by setting Sx equal to the given value:
8.19 cm - 3(-2.39 cm) + 6.93 cm = 22.29 cm
Simplifying this equation, we get:
2x - 6 = 22.29
Adding 6 to both sides, we have:
2x = 28.29
Dividing both sides by 2, we find:
x = 14.145