A = -5× (-3) - 4x(-6) -1
= +15 + 24 - 1
vous terminez
B = 26 - [9 - (3 - 4 x 6)] +7X(-3)
= 26 - [ 9 - (3 - 24)] - 21
= 26 - [ 9 + 21] - 21
= 26 - 30 - 21
vous terminez
C = 7 -51 ÷ (21 - 4x 6)
= 7 - 51 : (21 - 24)
= 7 - 51 : (-3)
= 7 + 17 = 24
priorité à la multiplication ou division sur addition et soustraction
