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3pe16*4pe7+5pe8*6pe35      va rog ajutati-ma va rog ft mult,e la matematica va implor cit mai repede




Răspuns :

3/16 * 4/7 + 5/8 * 6/35 =

3/16 * 4/7 =3/4²  * 4/7  = 3/4 * 1/7 = 3/28
5/8 * 6 /35 = 5/(2*4 )  * (2*3)/(5*7)  = 1/4 *3/7 = 3/28

3/28+3/28=6/28=2*3/2*14= 3/14