Réponse :
bonsoir
(-5.4)+(-2)=-5.4-2=-7.4
(-1.23)-(-1.47)=-1.23+1.47=0.24
(-5.2)+(-2.8)=-5.2-2.8=-8
(-4)-(+5.2)=-4-5.2=-9.2
(-4.3)+(+1.3)=-4.3+1.3=-3
(-36.2)-(+25)=-36.2-25=-61.2
(-53)+24=-29
(-7.9)-4.6=-7.9-4.6=-12.5
3.5-2.8=0.7
12.4+(-12.6)=-0.2
15.6-(-11.3)=15.6+11.3=26.9
(-14.2)+(15.8)=1.6
36.2-(+25)=36.2-25=11.2
(-7)+5=-2
4.5-(-5.4)=4.5+5.4=9.9
(-19.8)+(-1.7)=-19.8-2.7=-22.5
-49+(-9)=-49-9=-58
74.6-(-7.4)74.6+7.4=82
-33+(-22)=-33-22=-55
-5.6-3.9=-9.5
36+(-25)=36-25=11
4.5-2.1=2.4
-4.5+3.1=-1.4
-3.8-7.6=-11.4
Explications étape par étape
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Réponse :
bonsoir
(-5.4)+(-2)=-5.4-2=-7.4
(-1.23)-(-1.47)=-1.23+1.47=0.24
(-5.2)+(-2.8)=-5.2-2.8=-8
(-4)-(+5.2)=-4-5.2=-9.2
(-4.3)+(+1.3)=-4.3+1.3=-3
(-36.2)-(+25)=-36.2-25=-61.2
(-53)+24=-29
(-7.9)-4.6=-7.9-4.6=-12.5
3.5-2.8=0.7
12.4+(-12.6)=-0.2
15.6-(-11.3)=15.6+11.3=26.9
(-14.2)+(15.8)=1.6
36.2-(+25)=36.2-25=11.2
(-7)+5=-2
4.5-(-5.4)=4.5+5.4=9.9
(-19.8)+(-1.7)=-19.8-2.7=-22.5
-49+(-9)=-49-9=-58
74.6-(-7.4)74.6+7.4=82
-33+(-22)=-33-22=-55
-5.6-3.9=-9.5
36+(-25)=36-25=11
4.5-2.1=2.4
-4.5+3.1=-1.4
-3.8-7.6=-11.4
Explications étape par étape