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(4supra15-3supra20):49supra30​

Răspuns :

Răspuns:

(4/15-3/20)/49/30=(4*4-3*3/60)/49/30=12-9/60/49/30=3/60/49/30=1/20/49/30

1/20*49*30=1/29400

Explicație pas cu pas: