F(t-1)=5(t-1)+4(t-1)

Solution for F(t-1)=5(t-1)+4(t-1) equation:

Simplifying
F(t + -1) = 5(t + -1) + 4(t + -1)

Reorder the terms:
F(-1 + t) = 5(t + -1) + 4(t + -1)
(-1 * F + t * F) = 5(t + -1) + 4(t + -1)
(-1F + tF) = 5(t + -1) + 4(t + -1)

Reorder the terms:
-1F + tF = 5(-1 + t) + 4(t + -1)
-1F + tF = (-1 * 5 + t * 5) + 4(t + -1)
-1F + tF = (-5 + 5t) + 4(t + -1)

Reorder the terms:
-1F + tF = -5 + 5t + 4(-1 + t)
-1F + tF = -5 + 5t + (-1 * 4 + t * 4)
-1F + tF = -5 + 5t + (-4 + 4t)

Reorder the terms:
-1F + tF = -5 + -4 + 5t + 4t

Combine like terms: -5 + -4 = -9
-1F + tF = -9 + 5t + 4t

Combine like terms: 5t + 4t = 9t
-1F + tF = -9 + 9t

Solving
-1F + tF = -9 + 9t

Solving for variable 'F'.

Move all terms containing F to the left, all other terms to the right.

Reorder the terms:
9 + -1F + -9t + tF = -9 + 9t + 9 + -9t

Reorder the terms:
9 + -1F + -9t + tF = -9 + 9 + 9t + -9t

Combine like terms: -9 + 9 = 0
9 + -1F + -9t + tF = 0 + 9t + -9t
9 + -1F + -9t + tF = 9t + -9t

Combine like terms: 9t + -9t = 0
9 + -1F + -9t + tF = 0

The solution to this equation could not be determined.