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LYAMN
Answered

Bonsoir,
Pouvez vous m'envoyer une correction sous forme simplifiée des expressions suivantes svp :

a.7/12-5/6×1/2
b.7/4÷2-1/6×2/3
c.3.7/12÷(5/6+1/2)
d.(3/5)^2-(-5)/6

Merci !​​​

Sagot :

bonjour

a.7/12-5/6×1/2

priorité à la multiplication

7/12- 5/12 = 2/12 = 1/6

b.7/4÷2-1/6×2/3

7/4 * 1/2  -2/18

=  7/8 -2/8 = 5/8

c.3*7/12÷(5/6+1/2)

(21/12) / (5/6 + 3/6)

=  (21/12) / (8/6)

= (21/12 )/( 4/3)

=21/12 * 3/4 = 63/48 = 21/16

d.(3/5)²-(-5)/6

= 9/25  +5/6

= 54/150 + 125/150

= 179/150

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