am nevoie la ex 4, va rog, punctul b
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Răspuns:
12 1/3× x 1/4=26 1/2+5 1/2:4 2/5
37/3 × 4x+1/4=53/2+11/2:22/5
37(4x+1)/12=53/2+11/2 ×5/22
148x+37/12=53/2+55/44
148x+37/12=1166/44+55/44
148×+37/12=1166+55/44
148x+37/12=1221/44
12×1221=44(148x+37)
14652=6512x+1628
14652-1628=6521x
13024=6521x
X=13024:6521
X=2