5(r-4)-1=-8n-20

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Solution for 5(r-4)-1=-8n-20 equation:


Simplifying
5(r + -4) + -1 = -8n + -20

Reorder the terms:
5(-4 + r) + -1 = -8n + -20
(-4 * 5 + r * 5) + -1 = -8n + -20
(-20 + 5r) + -1 = -8n + -20

Reorder the terms:
-20 + -1 + 5r = -8n + -20

Combine like terms: -20 + -1 = -21
-21 + 5r = -8n + -20

Reorder the terms:
-21 + 5r = -20 + -8n

Solving
-21 + 5r = -20 + -8n

Solving for variable 'r'.

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

Add '21' to each side of the equation.
-21 + 21 + 5r = -20 + 21 + -8n

Combine like terms: -21 + 21 = 0
0 + 5r = -20 + 21 + -8n
5r = -20 + 21 + -8n

Combine like terms: -20 + 21 = 1
5r = 1 + -8n

Divide each side by '5'.
r = 0.2 + -1.6n

Simplifying
r = 0.2 + -1.6n

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