s-15=2(s-20)

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Solution for s-15=2(s-20) equation:


Simplifying
s + -15 = 2(s + -20)

Reorder the terms:
-15 + s = 2(s + -20)

Reorder the terms:
-15 + s = 2(-20 + s)
-15 + s = (-20 * 2 + s * 2)
-15 + s = (-40 + 2s)

Solving
-15 + s = -40 + 2s

Solving for variable 's'.

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

Add '-2s' to each side of the equation.
-15 + s + -2s = -40 + 2s + -2s

Combine like terms: s + -2s = -1s
-15 + -1s = -40 + 2s + -2s

Combine like terms: 2s + -2s = 0
-15 + -1s = -40 + 0
-15 + -1s = -40

Add '15' to each side of the equation.
-15 + 15 + -1s = -40 + 15

Combine like terms: -15 + 15 = 0
0 + -1s = -40 + 15
-1s = -40 + 15

Combine like terms: -40 + 15 = -25
-1s = -25

Divide each side by '-1'.
s = 25

Simplifying
s = 25

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