4=8s-1-20

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Solution for 4=8s-1-20 equation:


Simplifying
4 = 8s + -1 + -20

Reorder the terms:
4 = -1 + -20 + 8s

Combine like terms: -1 + -20 = -21
4 = -21 + 8s

Solving
4 = -21 + 8s

Solving for variable 's'.

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

Add '-8s' to each side of the equation.
4 + -8s = -21 + 8s + -8s

Combine like terms: 8s + -8s = 0
4 + -8s = -21 + 0
4 + -8s = -21

Add '-4' to each side of the equation.
4 + -4 + -8s = -21 + -4

Combine like terms: 4 + -4 = 0
0 + -8s = -21 + -4
-8s = -21 + -4

Combine like terms: -21 + -4 = -25
-8s = -25

Divide each side by '-8'.
s = 3.125

Simplifying
s = 3.125

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