January 2021 0 90 Report
Merci d'avance pour votre aide calculer en prenant le soin de simplifier avant de calculer
A= 2/5 * 5/3
B= 3/7 * 4/-3
D = 9/-11 * 7/18
H = 7/ -10 * -15/-2
I = -21/-2 * -5/-28
J = -2/35 * -25/6
K = 21/-8 * -22/15
L = -6/-15 * -20/-8
M= 2/-3 * -11/5 * -5/7
R = 23/51 * -13/-19 * -7/9 * 0/34


calculer en detaillant,on donnera le resultat sous la forme d'une fraction irréductible

A= 3/7 + 4/21 - 5/2
B = 2/3 - 4/3 * 5/2
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