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4 supra 5 plus 3 supra 2 ori 2 supra 9

Răspuns :

4/5+3/2*2/9=4/5+1/3=(12+5)/15=17/15
4/5+3/2×2/9=
se efectueaza inmultirea si se fac simplificari si ramane⇒
4/5+1/3=
numitorul comun a celor 2 nr (5.3) este 15
12+5/15⇒17/15
sucees