4b-5(-a-3)i=7-8i

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Solution for 4b-5(-a-3)i=7-8i equation:


Simplifying
4b + -5(-1a + -3) * i = 7 + -8i

Reorder the terms:
4b + -5(-3 + -1a) * i = 7 + -8i

Reorder the terms for easier multiplication:
4b + -5i(-3 + -1a) = 7 + -8i
4b + (-3 * -5i + -1a * -5i) = 7 + -8i

Reorder the terms:
4b + (5ai + 15i) = 7 + -8i
4b + (5ai + 15i) = 7 + -8i

Reorder the terms:
5ai + 4b + 15i = 7 + -8i

Solving
5ai + 4b + 15i = 7 + -8i

Solving for variable 'a'.

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

Add '-4b' to each side of the equation.
5ai + 4b + -4b + 15i = 7 + -4b + -8i

Combine like terms: 4b + -4b = 0
5ai + 0 + 15i = 7 + -4b + -8i
5ai + 15i = 7 + -4b + -8i

Add '-15i' to each side of the equation.
5ai + 15i + -15i = 7 + -4b + -8i + -15i

Combine like terms: 15i + -15i = 0
5ai + 0 = 7 + -4b + -8i + -15i
5ai = 7 + -4b + -8i + -15i

Combine like terms: -8i + -15i = -23i
5ai = 7 + -4b + -23i

Divide each side by '5i'.
a = 1.4i-1 + -0.8bi-1 + -4.6

Simplifying
a = 1.4i-1 + -0.8bi-1 + -4.6

Reorder the terms:
a = -4.6 + -0.8bi-1 + 1.4i-1

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