Question

100-400+{-5×78+(89-90)}÷2=

Answer 1

Answer:

- 495.5

Step-by-step explanation:

100-400+{-5×78+(89-90)}÷2

⇒ 100 - 400 + {-5 × 78 + (-1)}÷2

⇒ 100 - 400 + {-390 - 1}÷2

⇒ 100 - 400 - (391÷2)

⇒ 100 - 400 - 195.5

⇒ 100 - 595.5

⇒ - 495.5

Answer 2

Answer:

-495.5

Step-by-step explanation:

100-400+{-5x78+(-1)}÷2

100-400+{-390-1}÷2

100-400+{-391}÷2

100-400-195.5

100-595.5

= -495.5