90-9=j

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Solution for 90-9=j equation:


Simplifying
90 + -9 = j

Combine like terms: 90 + -9 = 81
81 = j

Solving
81 = j

Solving for variable 'j'.

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

Add '-1j' to each side of the equation.
81 + -1j = j + -1j

Combine like terms: j + -1j = 0
81 + -1j = 0

Add '-81' to each side of the equation.
81 + -81 + -1j = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -1j = 0 + -81
-1j = 0 + -81

Combine like terms: 0 + -81 = -81
-1j = -81

Divide each side by '-1'.
j = 81

Simplifying
j = 81

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