5-2j=3j-7j+21

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Solution for 5-2j=3j-7j+21 equation:


Simplifying
5 + -2j = 3j + -7j + 21

Reorder the terms:
5 + -2j = 21 + 3j + -7j

Combine like terms: 3j + -7j = -4j
5 + -2j = 21 + -4j

Solving
5 + -2j = 21 + -4j

Solving for variable 'j'.

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

Add '4j' to each side of the equation.
5 + -2j + 4j = 21 + -4j + 4j

Combine like terms: -2j + 4j = 2j
5 + 2j = 21 + -4j + 4j

Combine like terms: -4j + 4j = 0
5 + 2j = 21 + 0
5 + 2j = 21

Add '-5' to each side of the equation.
5 + -5 + 2j = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 2j = 21 + -5
2j = 21 + -5

Combine like terms: 21 + -5 = 16
2j = 16

Divide each side by '2'.
j = 8

Simplifying
j = 8

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