Répondre :
1-5/6 = 6/6 - 5/6 = 1/6
1+1/6 = 6/6+1/6 = 7/6
7/9+(2-2*3)/(3-3*7) = 7/9 + (-4)/(-18) = 7/9 + 2/9 = 9/9 = 1
bonjour .j'espere ne pas me tromper.
a)1-5 -4
__ ___
6 6 -4 2 -2 1 -2 3 -6
---------- = ---- = __ : __ = __ :__ = __x __ = __ = -2
1+ 1 2 6 6 3 3 3 1 3
__ __
6 6
b) 7 + 2-2x3 7 2-6 7 -4 7 -2
__ +_____ = __+___ = __+___ = __+___ = 5
9 +3-3x7 9 3-21 9 -18 9 -9