Question

1) 21-(5-8) 2) 3,7-(4-5,3) 3)1/6-(5/12-7/12) 4) -13- (20-32)

Answer 1

21-5+8=24
3,7-4+5,3=5
1/6-5/12+7/12=4/12=1/3
-13-20+32=-1

Answer 2

1) 24
2)5
3)??
4)??
3 и 4 там они решили хорошо

Answer 3

1. 21-(5-8) = 21-(-3) = 21+3 = 24
2. 3,7-(4-5,3) = 3,7-(-0,3) = 4
3. 1/6-(5/12-7/12) = 1/6-(-1/6) = 1/6+1/6 = 1/3
4. -13- (20-32) = -13-(-12) = -13+12 = -1