Question

40 +90:[9 +48 : (a +6)]=
46​

Answer 1

Răspuns:

40+90:[9+48:(a+6)]=46

a diferit de -6

a diferit de

$- \frac{34}{3}$

40+90:(9+48/a+6)=46

$40 + 90 \div \frac{9(a + 6) + 48}{a + 6} = 46$

$40 + 90 \div \frac{9a + 54 + 48}{a + 6} = 46$

calculezi 54+48

$40 + 90 \times \frac{a + 6}{9a + 102} = 46$

$40 + 90 \times \frac{a + 6}{3(3a + 34)} = 46$

simplifici 3 cu 90 prin 3

$40 + \frac{30(a + 6)}{3a + 34} = 46$

$\frac{30a + 108}{3a + 34} = 46 - 40$

apoi scri fracția egal cu 6

30a+108=6(3a+34)

30a+108=18a+204

30a-18a=-108+204

12a=24

a=2