7+11s-1=8s+21-2s

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Solution for 7+11s-1=8s+21-2s equation:


Simplifying
7 + 11s + -1 = 8s + 21 + -2s

Reorder the terms:
7 + -1 + 11s = 8s + 21 + -2s

Combine like terms: 7 + -1 = 6
6 + 11s = 8s + 21 + -2s

Reorder the terms:
6 + 11s = 21 + 8s + -2s

Combine like terms: 8s + -2s = 6s
6 + 11s = 21 + 6s

Solving
6 + 11s = 21 + 6s

Solving for variable 's'.

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

Add '-6s' to each side of the equation.
6 + 11s + -6s = 21 + 6s + -6s

Combine like terms: 11s + -6s = 5s
6 + 5s = 21 + 6s + -6s

Combine like terms: 6s + -6s = 0
6 + 5s = 21 + 0
6 + 5s = 21

Add '-6' to each side of the equation.
6 + -6 + 5s = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 5s = 21 + -6
5s = 21 + -6

Combine like terms: 21 + -6 = 15
5s = 15

Divide each side by '5'.
s = 3

Simplifying
s = 3

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