1. `A=5+6i,B=-2+3i,C=1-3i`
Find re(A)

Solution:
Here `A=5+6i,B=-2+3i,C=1-3i`




So in complex number `A=5+6i`, the real part is `5` and the imaginary part is `6`

`:.` Re`(A)=5`

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2. `A=5+6i,B=-2+3i,C=1-3i`
Find re(B)

Solution:
Here `A=5+6i,B=-2+3i,C=1-3i`




So in complex number `B=-2+3i`, the real part is `-2` and the imaginary part is `3`

`:.` Re`(B)=-2`

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3. `A=5+6i,B=-2+3i,C=1-3i`
Find re(C)

Solution:
Here `A=5+6i,B=-2+3i,C=1-3i`




So in complex number `C=1-3i`, the real part is `1` and the imaginary part is `-3`

`:.` Re`(C)=1`