INES01ZR INES01ZR 30-11-2021 Mathématiques Answered a. (+7) + (-12) - (-7) + (-12) = 的,(+12)+(7) g.(-12) + (-7)= b.(-7) + (+12) d. (+7) + (+12) - 4.(-12) + (+7)= (+12月(7)
