9+8(2-10r)=

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Solution for 9+8(2-10r)= equation:


Simplifying
9 + 8(2 + -10r) = 0
9 + (2 * 8 + -10r * 8) = 0
9 + (16 + -80r) = 0

Combine like terms: 9 + 16 = 25
25 + -80r = 0

Solving
25 + -80r = 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 + -80r = 0 + -25

Combine like terms: 25 + -25 = 0
0 + -80r = 0 + -25
-80r = 0 + -25

Combine like terms: 0 + -25 = -25
-80r = -25

Divide each side by '-80'.
r = 0.3125

Simplifying
r = 0.3125

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