A: -5x(-3)-5x(-4) = ? B: 17-6x[5+4x(-3) ] = ? C: 5/6+1/2 x(7/6 - 4/9)= ? detaillant
Mathématiques
gagane62
Question
A: -5x(-3)-5x(-4) = ? B: 17-6x[5+4x(-3)] = ? C: 5/6+1/2 x(7/6 - 4/9)= ? detaillant
1 Réponse
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1. Réponse shanaclaes98
A : -5x(-3)-5x(-4)=
15-(-20)=15+20=35
B : 17-6x[5+4x(-3)]=
17-6x(5+(-12))=
17-6x(5-12)=
17-6x(-7)=17-(-42)=17+42=59
C : 5/6 + 1/2x(7/6-4/9)=
5/6+1/2x(21/18-8/18)=
5/6+1/2x(13/18)=
5/6+13/36=30/36+13/36=43/36