Question

Aflat, i num˘arul necunoscut x din ecuat ia:
( x + 3intregi2/7):21/6=5intregi1/3.

Answer 1

(x + $3\frac{2}{7}$ ) : $\frac{21}{6} = 5\frac{1}{3}$
(x + $\frac{23}{7}$ ) : $\frac{21}{6} = \frac{16}{3}$
x + $\frac{23}{7}$  = $\frac{16}{3}$ • $\frac{21}{6}$
x + $\frac{23}{7} = \frac{56}{3}$
x = $\frac{56}{3} - \frac{23}{7}$
x = $\frac{392}{21} - \frac{69}{21}$
x = $\frac{323}{21}$