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Answered

bonjour vous pouvez m’aidez à calculer A = 2/7-3/4*14/9 B = -7/8*(2/3-1) C = 4/5*1/4+2/5 svp faut que je fasse ça pour demain

Sagot :

Bonsoir,

A = 2/7-3/4*14/9

= 2/7 -42/36

= 2/7 - 7/6

= 12/42 - 49/42

= -37/42

B = -7/8*(2/3-1)

= -7/8 * ( 2/3 -3/3)

= -7/8 * -1/3

= 7/24

C = 4/5*1/4+2/5

= 4/20 +2/5

= 4/20 + 8/20

= 12/20

= 3/5

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