8+2s-1=6s+21-2s

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Solution for 8+2s-1=6s+21-2s equation:


Simplifying
8 + 2s + -1 = 6s + 21 + -2s

Reorder the terms:
8 + -1 + 2s = 6s + 21 + -2s

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

Reorder the terms:
7 + 2s = 21 + 6s + -2s

Combine like terms: 6s + -2s = 4s
7 + 2s = 21 + 4s

Solving
7 + 2s = 21 + 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.
7 + 2s + -4s = 21 + 4s + -4s

Combine like terms: 2s + -4s = -2s
7 + -2s = 21 + 4s + -4s

Combine like terms: 4s + -4s = 0
7 + -2s = 21 + 0
7 + -2s = 21

Add '-7' to each side of the equation.
7 + -7 + -2s = 21 + -7

Combine like terms: 7 + -7 = 0
0 + -2s = 21 + -7
-2s = 21 + -7

Combine like terms: 21 + -7 = 14
-2s = 14

Divide each side by '-2'.
s = -7

Simplifying
s = -7

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