x+y+s+z=40

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Solution for x+y+s+z=40 equation:


Simplifying
x + y + s + z = 40

Reorder the terms:
s + x + y + z = 40

Solving
s + x + y + z = 40

Solving for variable 's'.

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

Add '-1x' to each side of the equation.
s + x + y + -1x + z = 40 + -1x

Reorder the terms:
s + x + -1x + y + z = 40 + -1x

Combine like terms: x + -1x = 0
s + 0 + y + z = 40 + -1x
s + y + z = 40 + -1x

Add '-1y' to each side of the equation.
s + y + -1y + z = 40 + -1x + -1y

Combine like terms: y + -1y = 0
s + 0 + z = 40 + -1x + -1y
s + z = 40 + -1x + -1y

Add '-1z' to each side of the equation.
s + z + -1z = 40 + -1x + -1y + -1z

Combine like terms: z + -1z = 0
s + 0 = 40 + -1x + -1y + -1z
s = 40 + -1x + -1y + -1z

Simplifying
s = 40 + -1x + -1y + -1z

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