Răspuns:
40+90:[9+48:(a+6)]=46
a diferit de -6
a diferit de
[tex] - \frac{34}{3} [/tex]
40+90:(9+48/a+6)=46
[tex]40 + 90 \div \frac{9(a + 6) + 48}{a + 6} = 46[/tex]
[tex]40 + 90 \div \frac{9a + 54 + 48}{a + 6} = 46[/tex]
calculezi 54+48
[tex]40 + 90 \times \frac{a + 6}{9a + 102} = 46[/tex]
[tex]40 + 90 \times \frac{a + 6}{3(3a + 34)} = 46[/tex]
simplifici 3 cu 90 prin 3
[tex]40 + \frac{30(a + 6)}{3a + 34} = 46[/tex]
[tex] \frac{30a + 108}{3a + 34} = 46 - 40[/tex]
apoi scri fracția egal cu 6
30a+108=6(3a+34)
30a+108=18a+204
30a-18a=-108+204
12a=24
a=2
