120=i*r

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Solution for 120=i*r equation:


Simplifying
120 = i * r

Multiply i * r
120 = ir

Solving
120 = ir

Solving for variable 'i'.

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

Add '-1ir' to each side of the equation.
120 + -1ir = ir + -1ir

Combine like terms: ir + -1ir = 0
120 + -1ir = 0

Add '-120' to each side of the equation.
120 + -120 + -1ir = 0 + -120

Combine like terms: 120 + -120 = 0
0 + -1ir = 0 + -120
-1ir = 0 + -120

Combine like terms: 0 + -120 = -120
-1ir = -120

Divide each side by '-1r'.
i = 120r-1

Simplifying
i = 120r-1

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