Bonjour
A = - 7/4 + 1/4 x - 8/3
A = - 7/4 - 8/12
A = (- 7 x 3) / (4 x 3) - 8/12
A = - 21/12 - 8/12
A = - 29/12
B = 5/14 + - 2/7 x 21/20
B = 5/14 - 42/140
B = (5 x 10) / (14 x 10) - 42/140
B = 50/140 - 42/140
B = 8/140
B = (4 x 2) / (4 x 35)
B = 2/35
C = (- 7/4 + 1/4) x - 8/3
C = - 6/4 x - 8/3
C = 48/12
C = (12 x 4) / (12 x 1)
C = 4
D = (5/14 + - 2/7) x 21/20
D = [5/14 - (2 x 2) / (7 x 2)] x 21/20
D = (5/14 - 4/14) x 21/20
D = 1/14 x 21/20
D = 21/280
D = (7 x 3) / (7 x 40)
D = 3/40
E = (- 7/4 - 1/4) x - 8/3
E = - 8/4 x - 8/3
E = 64/12
E = (4 x 16) / (4 x 3)
E = 16/3
F = (5/14 - -2/7) x 21/20
F = (5/14 + 4/14) x 21/20
F = 9/14 x 21/20
F = 189/140
F = (7 x 27) / (7 x 20)
F = 27/20
G = - 7/4 - 1/4 x - 8/3
G = - 7/4 + 8/12
G = (- 7 x 3) / (4 x 3) + 8/12
G = - 21/12 + 8/12
G = - 13/12
H = 5/14 - 2/7 x 21/20
H = 5/14 - 42/140
H = 50/140 - 42/140
H = 8/140
H = 2/35.
