7700=2800*(1+a*25)

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Solution for 7700=2800*(1+a*25) equation: 


Simplifying
7700 = 2800(1 + a * 25)

Reorder the terms for easier multiplication:
7700 = 2800(1 + 25a)
7700 = (1 * 2800 + 25a * 2800)
7700 = (2800 + 70000a)

Solving
7700 = 2800 + 70000a

Solving for variable 'a'.

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

Add '-70000a' to each side of the equation.
7700 + -70000a = 2800 + 70000a + -70000a

Combine like terms: 70000a + -70000a = 0
7700 + -70000a = 2800 + 0
7700 + -70000a = 2800

Add '-7700' to each side of the equation.
7700 + -7700 + -70000a = 2800 + -7700

Combine like terms: 7700 + -7700 = 0
0 + -70000a = 2800 + -7700
-70000a = 2800 + -7700

Combine like terms: 2800 + -7700 = -4900
-70000a = -4900

Divide each side by '-70000'.
a = 0.07

Simplifying
a = 0.07

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