3s+7=s+12

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Solution for 3s+7=s+12 equation:


Simplifying
3s + 7 = s + 12

Reorder the terms:
7 + 3s = s + 12

Reorder the terms:
7 + 3s = 12 + s

Solving
7 + 3s = 12 + 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.
7 + 3s + -1s = 12 + s + -1s

Combine like terms: 3s + -1s = 2s
7 + 2s = 12 + s + -1s

Combine like terms: s + -1s = 0
7 + 2s = 12 + 0
7 + 2s = 12

Add '-7' to each side of the equation.
7 + -7 + 2s = 12 + -7

Combine like terms: 7 + -7 = 0
0 + 2s = 12 + -7
2s = 12 + -7

Combine like terms: 12 + -7 = 5
2s = 5

Divide each side by '2'.
s = 2.5

Simplifying
s = 2.5

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