8s-21=-63+s

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Solution for 8s-21=-63+s equation:


Simplifying
8s + -21 = -63 + s

Reorder the terms:
-21 + 8s = -63 + s

Solving
-21 + 8s = -63 + 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.
-21 + 8s + -1s = -63 + s + -1s

Combine like terms: 8s + -1s = 7s
-21 + 7s = -63 + s + -1s

Combine like terms: s + -1s = 0
-21 + 7s = -63 + 0
-21 + 7s = -63

Add '21' to each side of the equation.
-21 + 21 + 7s = -63 + 21

Combine like terms: -21 + 21 = 0
0 + 7s = -63 + 21
7s = -63 + 21

Combine like terms: -63 + 21 = -42
7s = -42

Divide each side by '7'.
s = -6

Simplifying
s = -6

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