(7i-3j)-(-2i+9j)=

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Solution for (7i-3j)-(-2i+9j)= equation:


Simplifying
(7i + -3j) + -1(-2i + 9j) = 0

Remove parenthesis around (7i + -3j)
7i + -3j + -1(-2i + 9j) = 0
7i + -3j + (-2i * -1 + 9j * -1) = 0
7i + -3j + (2i + -9j) = 0

Reorder the terms:
7i + 2i + -3j + -9j = 0

Combine like terms: 7i + 2i = 9i
9i + -3j + -9j = 0

Combine like terms: -3j + -9j = -12j
9i + -12j = 0

Solving
9i + -12j = 0

Solving for variable 'i'.

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

Add '12j' to each side of the equation.
9i + -12j + 12j = 0 + 12j

Combine like terms: -12j + 12j = 0
9i + 0 = 0 + 12j
9i = 0 + 12j
Remove the zero:
9i = 12j

Divide each side by '9'.
i = 1.333333333j

Simplifying
i = 1.333333333j

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