Question

Вычисли :
1) 1/8+5/8=....+1/4=...-2/5=...+1/5=....+3/5=..
2) 2/9+1/9=...+2/3=...-2/7=..-4/7=...+6/7=..
3) 3/10-1/10=..+4/5=..-1/6=...-3/6=...+2/3=..

Answer 1

1)3/4...1...3/5...4/5...=7,5.
2)1,3...1...5,7...1,7...=1
3)1/5...1...5/6...1/3...=1