Упростите выражение 1)3/7а×8/9b.2)3(1/6c)×7/9d.3)3(3/7m)×3b×4(3/8p)
1. 3/7a*8/9b=8/21ab 2. 3(1/6c)*7/9d=2(25/54)cd 3. 3(3/7m)*3b*4(3/8p)=45mbp