Sagot :
Réponse :
Explications étape par étape :
Bonjour
A=(1/8 -7/12) / (7/6 + 7 /16) = (3/24 - 14/24) / (112/96 + 42/96)
A =( - 11/24) / (154/96)= (-11/24) × (96/154) = ( - 11×96)/(24×154)
A= (- 11×4×24)/(24×11x 14)=(-4/14)= (-2x2)/(2x7)=(-2/7)
B= 1/8 - 7/12 / 7/6 + 7/12
B = 1/8 - 7/12 × 6/7 + 7/12
B = 1/8 - (7×6)/(12×7) + 7/12
B = 1/8 - (7×6)/(6×2×7) + 7/12
B = 1/8 - 1/2 + 7/12
B = 3/24 - 12/24 + 14/24
B = 5/24
C = (1/8 + 7/12) × (6/5 /4/15)
C = (3/24 + 14/24) × (6/5×15/4)
C= (17/24) × ( 6×15/5×4)
C=(17/24) × ( ( 2×3×3×5) / (5×2×2)
C = (17/24) × (9/2)
C = (17×9) /(24×2)
C = (17 × 3×3) × (3×8×2)
C = 51/16