s+t+t+s-s=

Solution for s+t+t+s-s= equation:

Simplifying
s + t + t + s + -1s = 0

Reorder the terms:
s + s + -1s + t + t = 0

Combine like terms: s + s = 2s
2s + -1s + t + t = 0

Combine like terms: 2s + -1s = 1s
1s + t + t = 0

Combine like terms: t + t = 2t
1s + 2t = 0

Solving
1s + 2t = 0

Solving for variable 's'.

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

Add '-2t' to each side of the equation.
1s + 2t + -2t = 0 + -2t

Combine like terms: 2t + -2t = 0
1s + 0 = 0 + -2t
1s = 0 + -2t
Remove the zero:
1s = -2t

Divide each side by '1'.
s = -2t

Simplifying
s = -2t