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bonsoir, aide en math svpp
ex22 ex23
merciiii ​

Bonsoir Aide En Math Svppex22 Ex23merciiii class=

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Bonsoir

A= -1 +2 -3 +4 -5

= -3

B= -20-17 +5 +10+(-6)

= -20-17 +5 +10-6

= -28

A= -7-5+10+(-7)

=  -7-5+10-7

=-9

B=  15 +(+3)  -4+(-9)

= 15 +3  -4-9

=5