bonjour
pouvez vous m aide je.bloque
A= 1/2+1-1/8
B= -5/2×-8/9×3/-2
C=-5/3+-1/6÷-7/6
D=16/3-9/3÷-54/81
E= (-2)×15×(-4)×6×(-7) /(-10)×9
F= (5/2-6/25×15/12)×6/22-3/15
G= -5/6+7/4/7/2-9
H=3/-2÷(-3/6+9/4)
merci​