Question

calcular

-8+3-9+4+1-7-13=

-9+5+16-21-19+35=​

Answer 1

−8+3−9+4+1−7−13

=−5−9+4+1−7−13

=−14+4+1−7−13

=−10+1−7−13

=−9−7−13

=−16−13

=−29

−9+5+16−21−19+35

=−4+16−21−19+35

=12−21−19+35

=−9−19+35

=−28+35

=7