👤

Calculați în două moduri:
a)2/3*(1/6+5/6)
b)3/5*(2/6+3/6)
c)10/7*(1/5+6/3)
d)(8/21+1/3)*63/5
e)38/67*(2/19+3/5)
f)(5/48+7/80)*360/336
g)(7/9+1/12+1/18)*108/66