bonjour
A=5/17÷(3/32-1/32)
=5/17÷2/32
=5/17x32/2
=160/34
=(80x2)(17x2)
=80/17
B=11/20-12/23÷-2/23
=11/20-12/23x-23/2
=11/20+276/46
=11/20+6
=120/20+11/20
=131/20
C=7/5÷(-5/21+(-1)/21)
=7/5÷-6/21
=7/5x-21/6
=-147/30
=(-49x3)(10x3)
=-49/10
D=-11/2-(7/3+(-13)/21)
=-11/2-49/21+(-13)/21
=-11/2-62/21
=(-21x11)/(2x21)-(62x2)/(21x2)
=-231/42-124/42
=-355/42
E=-7/5+(-3)/20x-7/3
=-7/5+21/60
=(-7x12)/(5x12)+21/60
=-84/60+21/60
=-63/60
=(-21x3)/(20x3)
=-21/20
F=-8/5+(-7)/3÷32
=-8/5+(-7)/3x-32/5
-8/5-224/15
=(-8x3)/(5x3)-224/15
=-24/15-224/15
=-248/15
