ẢNH BTS ( NHẤT LÀ ẢNH CỦA JEON JUNGKOOK )

a)85.(27-56)+85.(56-37)

= 85.(27-56+56-37)

= 85.(-10)

= - 850

b)29.(129-13)-129.(29-13)

= 29.129 - 29.13 - 129.29 + 129.13

= 100.13

=1300

A.BTS

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

People (A) who work (B) involves (C) standing for most of the day often suffer (D) from backache.

A. who

B. involves

C. standing

D. from