Question

Решите пж 1) ( -9,87-6,4) + (6,54-11,87-(-5.66))= 2) 33,09-654,09-2,87+(-0,76+87,66-90)=

Answer 1

Ответ:

(-9,87 - 6,4) + (6,54 - 11,87 - (-5.66)) = -16.27 + 0.97 = -15.3

33.09 - 654.09 - 2.87 + (-0.76 + 87.66 - 90) = -623.95 - 2.87 - 0.76 + -2.44 = -630.02

Answer 2

1. Let's simplify the expression step by step:

(-9.87 - 6.4) + (6.54 - 11.87 - (-5.66))

= (-16.27) + (6.54 - 11.87 + 5.66) [Note: Removing the parentheses]

= -16.27 + (6.54 - 11.87 + 5.66) [Negative sign outside the parentheses]

= -16.27 + 6.54 - 11.87 + 5.66 [Rearranging the terms]

= (-16.27 + 6.54 + 5.66) - 11.87 [Grouping like terms]

= -4.07 - 11.87 [Adding the grouped terms]

= -15.94

Therefore, (-9.87 - 6.4) + (6.54 - 11.87 - (-5.66)) is equal to -15.94.

2. Let's simplify the expression step by step:

33.09 - 654.09 - 2.87 + (-0.76 + 87.66 - 90)

= 33.09 - 654.09 - 2.87 + (-0.76 + 87.66 - 90) [Removing the parentheses]

= 33.09 - 654.09 - 2.87 + (-0.76 + 87.66 - 90) [Negative sign outside the parentheses]

= 33.09 - 654.09 - 2.87 + (-3.10) [Simplifying the parentheses]

= 33.09 - 654.09 - 2.87 - 3.10 [Rearranging the terms]

= (33.09 - 654.09 - 2.87) - 3.10 [Grouping like terms]

= -623.87 - 3.10 [Adding the grouped terms]

= -626.97

Therefore, 33.09 - 654.09 - 2.87 + (-0.76 + 87.66 - 90) is equal to -626.97.