1) A = (2/3 : 8/7) : (- 7/6 + 3/4) A = (2/3 x 7/8) : (- 7 x 2 / 6 x 2 + 3 x 3 / 4 x 3) A = 14/24 : (- 14/12 + 9/12) A = 14/24 : - 5/12 A = 14/24 x - 12/5 A = - 168/120 A = 24 x - 7 / 24 x 5 A = - 7/5
B = (5/11 - 7/8) x 33 - 3/8 B = (5 x 8 / 11 x 8 - 7 x 11 / 8 x 11) x 33 - 3/8 B = (40/88 - 77/88) x 33 - 3/8 B = - 37/88 x 33 - 3 x 11 / 8 x 11 B = - 1221/88 - 33/88 B = - 1254/88 B = 22 x - 57 / 22 x 4 B = - 57/4
Lista de comentários
Verified answer
Bonjour,1)
A = (2/3 : 8/7) : (- 7/6 + 3/4)
A = (2/3 x 7/8) : (- 7 x 2 / 6 x 2 + 3 x 3 / 4 x 3)
A = 14/24 : (- 14/12 + 9/12)
A = 14/24 : - 5/12
A = 14/24 x - 12/5
A = - 168/120
A = 24 x - 7 / 24 x 5
A = - 7/5
B = (5/11 - 7/8) x 33 - 3/8
B = (5 x 8 / 11 x 8 - 7 x 11 / 8 x 11) x 33 - 3/8
B = (40/88 - 77/88) x 33 - 3/8
B = - 37/88 x 33 - 3 x 11 / 8 x 11
B = - 1221/88 - 33/88
B = - 1254/88
B = 22 x - 57 / 22 x 4
B = - 57/4