Qx+d=r

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Solution for Qx+d=r equation: 


Simplifying
Qx + d = r

Reorder the terms:
d + xQ = r

Solving
d + xQ = r

Solving for variable 'd'.

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

Add '-1xQ' to each side of the equation.
d + xQ + -1xQ = r + -1xQ

Combine like terms: xQ + -1xQ = 0
d + 0 = r + -1xQ
d = r + -1xQ

Simplifying
d = r + -1xQ

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