Question

выполним сложение дробей 3/4+5/8 ;2/5+7/15;7/16+1/4 ;2/7+1/3

Answer 1

3/4+5/8=8/12; 2/5+7/15=9/20;7/16+1/4=8/20;2/7+1/3=3/10

Answer 2

1. 3/4+5/8=(6+5)/8=11/8
2.2/5+7/15=(6+7)/15=13/15
3.7/16+1/4=(7+4)/16=11/16
4. 2/7+1/3=(6+7)/21=13/21