120-(qi+qb)=2qi

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Solution for 120-(qi+qb)=2qi equation:


Simplifying
120 + -1(qi + qb) = 2qi

Reorder the terms:
120 + -1(bq + iq) = 2qi
120 + (bq * -1 + iq * -1) = 2qi
120 + (-1bq + -1iq) = 2qi

Solving
120 + -1bq + -1iq = 2iq

Solving for variable 'b'.

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

Add '-120' to each side of the equation.
120 + -1bq + -120 + -1iq = -120 + 2iq

Reorder the terms:
120 + -120 + -1bq + -1iq = -120 + 2iq

Combine like terms: 120 + -120 = 0
0 + -1bq + -1iq = -120 + 2iq
-1bq + -1iq = -120 + 2iq

Add 'iq' to each side of the equation.
-1bq + -1iq + iq = -120 + 2iq + iq

Combine like terms: -1iq + iq = 0
-1bq + 0 = -120 + 2iq + iq
-1bq = -120 + 2iq + iq

Combine like terms: 2iq + iq = 3iq
-1bq = -120 + 3iq

Divide each side by '-1q'.
b = 120q-1 + -3i

Simplifying
b = 120q-1 + -3i

Reorder the terms:
b = -3i + 120q-1

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