25=s+13-4*s

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Solution for 25=s+13-4*s equation:


Simplifying
25 = s + 13 + -4s

Reorder the terms:
25 = 13 + s + -4s

Combine like terms: s + -4s = -3s
25 = 13 + -3s

Solving
25 = 13 + -3s

Solving for variable 's'.

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

Add '3s' to each side of the equation.
25 + 3s = 13 + -3s + 3s

Combine like terms: -3s + 3s = 0
25 + 3s = 13 + 0
25 + 3s = 13

Add '-25' to each side of the equation.
25 + -25 + 3s = 13 + -25

Combine like terms: 25 + -25 = 0
0 + 3s = 13 + -25
3s = 13 + -25

Combine like terms: 13 + -25 = -12
3s = -12

Divide each side by '3'.
s = -4

Simplifying
s = -4

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