Question

5 ц - 3/10 + 2 ц 7/10
2 ц - 4/5 - 1/2

Answer 1

1) 5 ц - 3/10 + 2ц 7/10 = 7 ц 6/10
2) 2 ц 4/5 - 1/2 = 2 ц 3/3