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1) Calculati:  (5supra12 - 7supra24):(-7supra 18+11supra36)•8supra0,(3)

Răspuns :

0,(3)=3/9=1/3

(5/12 -7/24) : ( -7/18 +11/36) * 8/1/3=  aducem la acelasi numitor in paranteze

(10-7)/24 : (-14+11)/36 * 8* 3/1=

= 3/24 : (-3/36) * 24=

= 1/8 : (-1/12) *24=

= 1/8 * (12/-1) *24=

=  1/2 * (-3) *24=

= (-3)*12=  -36