(7j)+(3j)+4=84

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Solution for (7j)+(3j)+4=84 equation:


Simplifying
(7j) + (3j) + 4 = 84

Reorder the terms:
4 + (7j) + (3j) = 84

Combine like terms: (7j) + (3j) = 10j
4 + 10j = 84

Solving
4 + 10j = 84

Solving for variable 'j'.

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

Add '-4' to each side of the equation.
4 + -4 + 10j = 84 + -4

Combine like terms: 4 + -4 = 0
0 + 10j = 84 + -4
10j = 84 + -4

Combine like terms: 84 + -4 = 80
10j = 80

Divide each side by '10'.
j = 8

Simplifying
j = 8

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