2640=2000(1+r(4))

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Solution for 2640=2000(1+r(4)) equation:


Simplifying
2640 = 2000(1 + r(4))

Reorder the terms for easier multiplication:
2640 = 2000(1 + 4r)
2640 = (1 * 2000 + 4r * 2000)
2640 = (2000 + 8000r)

Solving
2640 = 2000 + 8000r

Solving for variable 'r'.

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

Add '-8000r' to each side of the equation.
2640 + -8000r = 2000 + 8000r + -8000r

Combine like terms: 8000r + -8000r = 0
2640 + -8000r = 2000 + 0
2640 + -8000r = 2000

Add '-2640' to each side of the equation.
2640 + -2640 + -8000r = 2000 + -2640

Combine like terms: 2640 + -2640 = 0
0 + -8000r = 2000 + -2640
-8000r = 2000 + -2640

Combine like terms: 2000 + -2640 = -640
-8000r = -640

Divide each side by '-8000'.
r = 0.08

Simplifying
r = 0.08

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