Bonjour
A = 3/15 -13/15 = -10/15 = -2/3
B = 2/9 -4/45 = 10/45-4/45 = 6/45 = 2/15
C = 12 x (5/8-2/8) = 12 x 3/8 = 36/8 = 9*4/2*4 = 9/2
D = (15/25 -3/25) x 5/4 + 1
= 12/25 x 5/4 + 1
= 60 /100 + 1
= 6/10 + 1
= 3/5 + 5/5
= 8/5
E = 3 + 2/4 x 4/5 x -5/6
E = 3 + 2 x 1/5 x -5/6
E = 3 + 2 x -1/6
= 3 -2/6
= 3 -1/3
= 9/3 -1/3 = 8/3
F = -4 x 27/3 + 4/8 x -5
= -4 x 9 -20/8
= -36 -5 /2
= -72/2 -5/2
= -77/2
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Bonjour
A = 3/15 -13/15 = -10/15 = -2/3
B = 2/9 -4/45 = 10/45-4/45 = 6/45 = 2/15
C = 12 x (5/8-2/8) = 12 x 3/8 = 36/8 = 9*4/2*4 = 9/2
D = (15/25 -3/25) x 5/4 + 1
= 12/25 x 5/4 + 1
= 60 /100 + 1
= 6/10 + 1
= 3/5 + 5/5
= 8/5
E = 3 + 2/4 x 4/5 x -5/6
E = 3 + 2 x 1/5 x -5/6
E = 3 + 2 x -1/6
= 3 -2/6
= 3 -1/3
= 9/3 -1/3 = 8/3
F = -4 x 27/3 + 4/8 x -5
= -4 x 9 -20/8
= -36 -5 /2
= -72/2 -5/2
= -77/2