2400=s+(2s-200)+(2s-400)

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Solution for 2400=s+(2s-200)+(2s-400) equation:


Simplifying
2400 = s + (2s + -200) + (2s + -400)

Reorder the terms:
2400 = s + (-200 + 2s) + (2s + -400)

Remove parenthesis around (-200 + 2s)
2400 = s + -200 + 2s + (2s + -400)

Reorder the terms:
2400 = s + -200 + 2s + (-400 + 2s)

Remove parenthesis around (-400 + 2s)
2400 = s + -200 + 2s + -400 + 2s

Reorder the terms:
2400 = -200 + -400 + s + 2s + 2s

Combine like terms: -200 + -400 = -600
2400 = -600 + s + 2s + 2s

Combine like terms: s + 2s = 3s
2400 = -600 + 3s + 2s

Combine like terms: 3s + 2s = 5s
2400 = -600 + 5s

Solving
2400 = -600 + 5s

Solving for variable 's'.

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

Add '-5s' to each side of the equation.
2400 + -5s = -600 + 5s + -5s

Combine like terms: 5s + -5s = 0
2400 + -5s = -600 + 0
2400 + -5s = -600

Add '-2400' to each side of the equation.
2400 + -2400 + -5s = -600 + -2400

Combine like terms: 2400 + -2400 = 0
0 + -5s = -600 + -2400
-5s = -600 + -2400

Combine like terms: -600 + -2400 = -3000
-5s = -3000

Divide each side by '-5'.
s = 600

Simplifying
s = 600

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