What is (-7-9i)+(10+10i) ?

The solution to (-7-9i)+(10+10i) is 3+i

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simplify (-7-9i)+(10+10i)

simplify

(- 7 - 9 i) + (10 + 10 i)

3 + i

Solution steps

(- 7 - 9 i) + (10 + 10 i)

Group the real part and the imaginary part of the complex number

(a + bi) + (c + d i) = (a + c) + (b + d) i

= (- 7 + 10) + (- 9 + 10) i

Simplify

(- 7 + 10) + (- 9 + 10) i : 3 + i

= 3 + i

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