Вычислите..12ц.1/4-9ц;10ц.8/9-2/9......

Question

Вычислите..12ц.1/4-9ц;10ц.8/9-2/9......

Answer 1

12 1/4-9= 49/4-9/1=49/4-36/4=13/4= 3 1/4;
10 8/9-2/9=98/9-2/9=96/9=10 6/9= 10 2/3