13=4+s

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Solution for 13=4+s equation:


Simplifying
13 = 4 + s

Solving
13 = 4 + s

Solving for variable 's'.

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

Add '-1s' to each side of the equation.
13 + -1s = 4 + s + -1s

Combine like terms: s + -1s = 0
13 + -1s = 4 + 0
13 + -1s = 4

Add '-13' to each side of the equation.
13 + -13 + -1s = 4 + -13

Combine like terms: 13 + -13 = 0
0 + -1s = 4 + -13
-1s = 4 + -13

Combine like terms: 4 + -13 = -9
-1s = -9

Divide each side by '-1'.
s = 9

Simplifying
s = 9

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