21=j-2

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Solution for 21=j-2 equation:


Simplifying
21 = j + -2

Reorder the terms:
21 = -2 + j

Solving
21 = -2 + 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.
21 + -1j = -2 + j + -1j

Combine like terms: j + -1j = 0
21 + -1j = -2 + 0
21 + -1j = -2

Add '-21' to each side of the equation.
21 + -21 + -1j = -2 + -21

Combine like terms: 21 + -21 = 0
0 + -1j = -2 + -21
-1j = -2 + -21

Combine like terms: -2 + -21 = -23
-1j = -23

Divide each side by '-1'.
j = 23

Simplifying
j = 23

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