3-2(5s+12)=21(s+2)-8s

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Solution for 3-2(5s+12)=21(s+2)-8s equation:


Simplifying
3 + -2(5s + 12) = 21(s + 2) + -8s

Reorder the terms:
3 + -2(12 + 5s) = 21(s + 2) + -8s
3 + (12 * -2 + 5s * -2) = 21(s + 2) + -8s
3 + (-24 + -10s) = 21(s + 2) + -8s

Combine like terms: 3 + -24 = -21
-21 + -10s = 21(s + 2) + -8s

Reorder the terms:
-21 + -10s = 21(2 + s) + -8s
-21 + -10s = (2 * 21 + s * 21) + -8s
-21 + -10s = (42 + 21s) + -8s

Combine like terms: 21s + -8s = 13s
-21 + -10s = 42 + 13s

Solving
-21 + -10s = 42 + 13s

Solving for variable 's'.

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

Add '-13s' to each side of the equation.
-21 + -10s + -13s = 42 + 13s + -13s

Combine like terms: -10s + -13s = -23s
-21 + -23s = 42 + 13s + -13s

Combine like terms: 13s + -13s = 0
-21 + -23s = 42 + 0
-21 + -23s = 42

Add '21' to each side of the equation.
-21 + 21 + -23s = 42 + 21

Combine like terms: -21 + 21 = 0
0 + -23s = 42 + 21
-23s = 42 + 21

Combine like terms: 42 + 21 = 63
-23s = 63

Divide each side by '-23'.
s = -2.739130435

Simplifying
s = -2.739130435

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