7-j=3(5-j)

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Solution for 7-j=3(5-j) equation:


Simplifying
7 + -1j = 3(5 + -1j)
7 + -1j = (5 * 3 + -1j * 3)
7 + -1j = (15 + -3j)

Solving
7 + -1j = 15 + -3j

Solving for variable 'j'.

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

Add '3j' to each side of the equation.
7 + -1j + 3j = 15 + -3j + 3j

Combine like terms: -1j + 3j = 2j
7 + 2j = 15 + -3j + 3j

Combine like terms: -3j + 3j = 0
7 + 2j = 15 + 0
7 + 2j = 15

Add '-7' to each side of the equation.
7 + -7 + 2j = 15 + -7

Combine like terms: 7 + -7 = 0
0 + 2j = 15 + -7
2j = 15 + -7

Combine like terms: 15 + -7 = 8
2j = 8

Divide each side by '2'.
j = 4

Simplifying
j = 4

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