Question

Вычислите a) -8.4+(2,3-9,8)-(4,5-9,8)

Answer 1

a) -8.4+(2,3-9,8)-(4,5-9,8)=-10,6

Действия:

1) 2,3-9,8=-7,5;

2)4,5-9,8=−5,3;

3)-7,5-(-5,3)=-7,5+5,3=−2,2;

4)-8,4+(-2,2)=−10,6

Answer 2

Решение внизу на фото

Answer 3

To compute the expression, let's first simplify the terms within the parentheses and then perform the operations step by step:

-8.4 + (2.3 - 9.8) - (4.5 - 9.8)

Step 1: Simplify the terms within the parentheses:

2.3 - 9.8 = -7.5 4.5 - 9.8 = -5.3

Step 2: Substitute the simplified terms back into the expression:

-8.4 + (-7.5) - (-5.3)

Step 3: Remove the parentheses:

-8.4 - 7.5 + 5.3

Step 4: Perform the addition and subtraction:

= -15.9 + 5.3

Step 5: Calculate the final result:

= -10.6

So, -8.4 + (2.3 - 9.8) - (4.5 - 9.8) equals -10.6.