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a fost răspuns

Ex 8 pag 229 va rog e) [1 supra 5+(1 supra 5-4supra5×1supra 8)×3]×2supra 3

Răspuns :

Răspuns:[1/5+(1/5-4/5*1/8)*3]*2/3=

[1/5+(1/5-4/40)*3]*2/3=

[1/5+(8/40-4/40)*3]*2/3=

(1/5+4/40*3)*2/3=

(1/5+12/40)*2/3=

(8/40+12/40)*2/3=

20/40*2/3=

1/2*2/3=2/6

*=inmultire

/=linia de la fractie

Explicație pas cu pas: