Bonjour, j’aimerai de l’aide pour mes calcules j’ai du mal à les faire pourriez-vous m’aider merci d’avance

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A = -13/8 + 7/16

A = (-13 x 2)/(8 x 2) + 7/16

A = -26/16 + 7/16

A = -19/16

B = 7/35 + 8/15

B = 7/(7 x 5) + 8/15

B = 1/5 + 8/15

B = (1 x 3)/(5 x 3) + 8/15

B = 3/15 + 8/15

B = 11/15

H = 63/30 x 45/28

H = (9 x 7 x 9 x 5)/(6 x 5 x 7 x 4)

H = (81 x 35)/(24 x 35)

H = 81/24

H = (3 x 27)/(3 x 8)

H = 27/8

J = 24/35 : 36/14

J = 24/35 x 14/36

J = (4 x 6 x 2 x 7)/(7 x 5 x 4 x 9)

J = (28 x 12)/(28 x 45)

J = 12/45

J = (3 x 4)/(3 x 15)

J = 4/15

M = -14/15 + 10/15 x 7/20

M = -14/15 + (10 x 7)/(15 x 2 x 10)

M = -14/15 + 7/30

M = (-14 x 2)/(15 x 2) + 7/30

M = -28/30 + 7/30

M = -21/30

M = (-3 x 7)/(3 x 10)

M = -7/10

J = (1/8 - 7/12) : (7/6 + 7/16)

J = [(1 x 3)/(8 x 3) - (7 x 2)/(12 x 2)] : [(7 x 16)/(6 x 16) + (7 x 6)/(16 x 6)]

J = (3/24 - 14/24) : (112/96 + 42/96)

J = -11/24 : (154/96)

J = -11/24 x 96/154

J = (-11 x 3 x 8 x 2 x 2)/(3 x 8 x 2 x 7 x 11)

J = -2/7