(-2r)(8)+(-25)=

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Solution for (-2r)(8)+(-25)= equation:


Simplifying
(-2r)(8) + (-25) = 0

Remove parenthesis around (-2r)
-2r(8) + (-25) = 0

Reorder the terms for easier multiplication:
-2 * 8r + (-25) = 0

Multiply -2 * 8
-16r + (-25) = 0
-16r + -25 = 0

Reorder the terms:
-25 + -16r = 0

Solving
-25 + -16r = 0

Solving for variable 'r'.

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

Add '25' to each side of the equation.
-25 + 25 + -16r = 0 + 25

Combine like terms: -25 + 25 = 0
0 + -16r = 0 + 25
-16r = 0 + 25

Combine like terms: 0 + 25 = 25
-16r = 25

Divide each side by '-16'.
r = -1.5625

Simplifying
r = -1.5625

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