Question

Calculati:5/24+7/36-1/48

Answer 1

$\frac{5}{24} + \frac{7}{36} - \frac{1}{48}= \frac{6*5+7*4-3*1}{144} = \frac{30+28-3}{144} = \frac{55}{144} =0,39$

$24= 2^{3}*3$
$36=3 ^{2} *2 ^{2}$
$48= 2^{4} *3$
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[24,36,48]=$2^{4} * 3^{2} =144$
Prima fractie o amplifici cu 6, a doua fractie o amplifici cu 4 si pe a treia fractie cu 3