7.9=8.9+s

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Solution for 7.9=8.9+s equation:


Simplifying
7.9 = 8.9 + s

Solving
7.9 = 8.9 + 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.
7.9 + -1s = 8.9 + s + -1s

Combine like terms: s + -1s = 0
7.9 + -1s = 8.9 + 0
7.9 + -1s = 8.9

Add '-7.9' to each side of the equation.
7.9 + -7.9 + -1s = 8.9 + -7.9

Combine like terms: 7.9 + -7.9 = 0.0
0.0 + -1s = 8.9 + -7.9
-1s = 8.9 + -7.9

Combine like terms: 8.9 + -7.9 = 1
-1s = 1

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

Simplifying
s = -1

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