xa+b=0

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Solution for xa+b=0 equation: 


Simplifying
xa + b = 0

Solving
ax + b = 0

Solving for variable 'a'.

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

Add '-1b' to each side of the equation.
ax + b + -1b = 0 + -1b

Combine like terms: b + -1b = 0
ax + 0 = 0 + -1b
ax = 0 + -1b
Remove the zero:
ax = -1b

Divide each side by 'x'.
a = -1bx-1

Simplifying
a = -1bx-1

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