7=15-s

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Solution for 7=15-s equation:


Simplifying
7 = 15 + -1s

Solving
7 = 15 + -1s

Solving for variable 's'.

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

Add 's' to each side of the equation.
7 + s = 15 + -1s + s

Combine like terms: -1s + s = 0
7 + s = 15 + 0
7 + s = 15

Add '-7' to each side of the equation.
7 + -7 + s = 15 + -7

Combine like terms: 7 + -7 = 0
0 + s = 15 + -7
s = 15 + -7

Combine like terms: 15 + -7 = 8
s = 8

Simplifying
s = 8

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