20=4(s-13)

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Solution for 20=4(s-13) equation:


Simplifying
20 = 4(s + -13)

Reorder the terms:
20 = 4(-13 + s)
20 = (-13 * 4 + s * 4)
20 = (-52 + 4s)

Solving
20 = -52 + 4s

Solving for variable 's'.

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

Add '-4s' to each side of the equation.
20 + -4s = -52 + 4s + -4s

Combine like terms: 4s + -4s = 0
20 + -4s = -52 + 0
20 + -4s = -52

Add '-20' to each side of the equation.
20 + -20 + -4s = -52 + -20

Combine like terms: 20 + -20 = 0
0 + -4s = -52 + -20
-4s = -52 + -20

Combine like terms: -52 + -20 = -72
-4s = -72

Divide each side by '-4'.
s = 18

Simplifying
s = 18

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