Question

1) -2.4+(-5,6)+12.32) (49+67)-(-37)3) 3.75+(-2,41)+(-1,36).​

Answer 1

Ответ:

1) 20,3

2) 153

3)-2

-2,4+(-5,6)=8

8+12.3=20.3

49+67=116

116+37=153

3.75-2.41=1.34

1.34-1.36=-2

Answer 2

Let's calculate the given expressions step by step:

1. -2.4 + (-5.6) + 12.3 = -2.4 - 5.6 + 12.3 (Negative sign before a number is equivalent to subtracting the number) = -8 + 12.3 = 4.3

2. (49 + 67) - (-37) = 116 - (-37) (Double negative becomes positive) = 116 + 37 = 153

3. 3.75 + (-2.41) + (-1.36) = 3.75 - 2.41 - 1.36 (Negative sign before a number is equivalent to subtracting the number) = 3.75 - 3.77 = -0.02

So, the results are:

1. -2.4 + (-5.6) + 12.3 = 4.3
2. (49 + 67) - (-37) = 153
3. 3.75 + (-2.41) + (-1.36) = -0.02