3s-42=-3a-12

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Solution for 3s-42=-3a-12 equation:


Simplifying
3s + -42 = -3a + -12

Reorder the terms:
-42 + 3s = -3a + -12

Reorder the terms:
-42 + 3s = -12 + -3a

Solving
-42 + 3s = -12 + -3a

Solving for variable 's'.

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

Add '42' to each side of the equation.
-42 + 42 + 3s = -12 + 42 + -3a

Combine like terms: -42 + 42 = 0
0 + 3s = -12 + 42 + -3a
3s = -12 + 42 + -3a

Combine like terms: -12 + 42 = 30
3s = 30 + -3a

Divide each side by '3'.
s = 10 + -1a

Simplifying
s = 10 + -1a

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