Answer:
50
Step-by-step explanation:
(2+3=5) +5 = 10
6+7 = 13
8+9=17
10
Then add them all together:
10+13+17+10=50
2+3=5
5+5=10
10+6=16
16+7=23
23+8=31
41+9=40
40+10=50
