Question

Н 350
1,2,3
Помогите пожалуйста

Answer 1

1) 21-(5-8) = 21 -(-3) = 21+3 = 24
2) 3.7-(4-5.3) = 3.7-(-1.3) = 3.7+1.3 = 5
3) 1/6 + 2/12 = 1/3