Question

(2 4/5 + 2 2/3) : (10 13/30 - 3 3/5) • 2,5

Answer 1

Решение в фотографии

Answer 2

(2 4/5 + 2 2/3) : (10 13/30 - 3 3/5) • 2,5=2
2 4/5 + 2 2/3= 14/5+8/3=42/15+40/15=
=82/15
10 13/30 - 3 3/5= 313/30-18/5=313/30-108/30=
=205/30=41/6
82/15:41/6=2*2/5=4/5
4/5=8/10=0,8
0,8*2,5=2