4s-12=5s+21

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Solution for 4s-12=5s+21 equation:


Simplifying
4s + -12 = 5s + 21

Reorder the terms:
-12 + 4s = 5s + 21

Reorder the terms:
-12 + 4s = 21 + 5s

Solving
-12 + 4s = 21 + 5s

Solving for variable 's'.

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

Add '-5s' to each side of the equation.
-12 + 4s + -5s = 21 + 5s + -5s

Combine like terms: 4s + -5s = -1s
-12 + -1s = 21 + 5s + -5s

Combine like terms: 5s + -5s = 0
-12 + -1s = 21 + 0
-12 + -1s = 21

Add '12' to each side of the equation.
-12 + 12 + -1s = 21 + 12

Combine like terms: -12 + 12 = 0
0 + -1s = 21 + 12
-1s = 21 + 12

Combine like terms: 21 + 12 = 33
-1s = 33

Divide each side by '-1'.
s = -33

Simplifying
s = -33

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