Bonjour
(- 1/2) - (+ 10/3)
= (- 1 x 3) / (2 x 3) - (10 x 2) / (3 x 2)
= - 3/6 - 20/6
= - 23/6.
2/8 + 4/8 + (- 1) + (- 9/4 + 10/4)
= 6/8 - 1 + 1/4
= 6/8 - (1 x 8) / (1 x 8) + (1 x 2) / (4 x 2)
= 6/8 - 8/8 + 2/8
= 8/8 - 8/8
= 0.
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Bonjour
(- 1/2) - (+ 10/3)
= (- 1 x 3) / (2 x 3) - (10 x 2) / (3 x 2)
= - 3/6 - 20/6
= - 23/6.
2/8 + 4/8 + (- 1) + (- 9/4 + 10/4)
= 6/8 - 1 + 1/4
= 6/8 - (1 x 8) / (1 x 8) + (1 x 2) / (4 x 2)
= 6/8 - 8/8 + 2/8
= 8/8 - 8/8
= 0.