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Efectuați 3 supra 4 plus 4 la 21 ori 42 supra 4 egal

Răspuns :

3/4 + (4/21) x (42/4) = 3/4 + (4/21) x(21/2) = 3/4 + 2 = 3/4 + 8/4 = 11/4



3 / 4 + 4 / 21 × 42 / 4 = 3 / 4 + 2 = 3 / 4 + 8 / 4 = 11 / 4 = 2 intregi si 3 / 4


→ 4 / 21 × 42 / 4 = ( 4 × 42 ) / ( 21 × 4 ) = 2