(2r-5)(25-5)=

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Solution for (2r-5)(25-5)= equation:


Simplifying
(2r + -5)(25 + -5) = 0

Reorder the terms:
(-5 + 2r)(25 + -5) = 0

Combine like terms: 25 + -5 = 20
(-5 + 2r)(20) = 0

Reorder the terms for easier multiplication:
20(-5 + 2r) = 0
(-5 * 20 + 2r * 20) = 0
(-100 + 40r) = 0

Solving
-100 + 40r = 0

Solving for variable 'r'.

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

Add '100' to each side of the equation.
-100 + 100 + 40r = 0 + 100

Combine like terms: -100 + 100 = 0
0 + 40r = 0 + 100
40r = 0 + 100

Combine like terms: 0 + 100 = 100
40r = 100

Divide each side by '40'.
r = 2.5

Simplifying
r = 2.5

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