Question

ayudaaa b). (+4)+(-6)+(+5)+(-2)?
c).(-2)+(+3)+(+1)+(-4)?
d).(+7)+(-4)+(-3)+(+5)?
e).(-0.4)+(+0.3)+(-0.2)+(+0.1)?
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Answer 1

$( + 4) + ( - 6) + ( + 5) + ( - 2) = \\ 4 - 6 + 5 - 2 \\ \bf = 1$

$( - 2) + ( + 3) + ( + 1) + ( - 4) = \\ - 2 + 3 + 1 - 4 \\ \bf = - 2$

$( + 7) + ( - 4) + ( - 3) + ( + 5) = \\ 7 - 4 - 3 + 5 \\ \bf = 5$

$( - 0.4) + ( + 0.3) + ( - 0.2) + ( + 0.1) = \\ - 0.4 + 0.3 - 0.2 + 0.1 \\ \bf = - 0.2$