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

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


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

Remove parenthesis around (-1a + -3i)
4b + -5 + -1a + -3i = 7 + -8i

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

Solving
-5 + -1a + 4b + -3i = 7 + -8i

Solving for variable 'a'.

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

Add '5' to each side of the equation.
-5 + -1a + 4b + 5 + -3i = 7 + 5 + -8i

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

Combine like terms: -5 + 5 = 0
0 + -1a + 4b + -3i = 7 + 5 + -8i
-1a + 4b + -3i = 7 + 5 + -8i

Combine like terms: 7 + 5 = 12
-1a + 4b + -3i = 12 + -8i

Add '-4b' to each side of the equation.
-1a + 4b + -4b + -3i = 12 + -4b + -8i

Combine like terms: 4b + -4b = 0
-1a + 0 + -3i = 12 + -4b + -8i
-1a + -3i = 12 + -4b + -8i

Add '3i' to each side of the equation.
-1a + -3i + 3i = 12 + -4b + -8i + 3i

Combine like terms: -3i + 3i = 0
-1a + 0 = 12 + -4b + -8i + 3i
-1a = 12 + -4b + -8i + 3i

Combine like terms: -8i + 3i = -5i
-1a = 12 + -4b + -5i

Divide each side by '-1'.
a = -12 + 4b + 5i

Simplifying
a = -12 + 4b + 5i

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