-9+6(1+8r)=18

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Solution for -9+6(1+8r)=18 equation:


Simplifying
-9 + 6(1 + 8r) = 18
-9 + (1 * 6 + 8r * 6) = 18
-9 + (6 + 48r) = 18

Combine like terms: -9 + 6 = -3
-3 + 48r = 18

Solving
-3 + 48r = 18

Solving for variable 'r'.

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

Add '3' to each side of the equation.
-3 + 3 + 48r = 18 + 3

Combine like terms: -3 + 3 = 0
0 + 48r = 18 + 3
48r = 18 + 3

Combine like terms: 18 + 3 = 21
48r = 21

Divide each side by '48'.
r = 0.4375

Simplifying
r = 0.4375

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