Tham khảo!

https://hoc24.vn/cau-hoi/tinh3655-18511-1215.3528434097324

=( 36.55 + 121.5) - 185.11

= 158.05 - 185.11= - 27.06

36.55 = 1980

185.11 = 2035

121.5 = 605

— 27,06

27.06

= 550 ( mk nghĩ vại)

36.55-185.11+121.5
= 1980-2035+605
= (-55)+605
= 605-55
= 550

36.55-185.11+121.5

=36.55-37.55+11.55

=55.(36-37+11)

=55.10

=550

-27.06

=550

36 . 45 + 36 . 55

= 36. (45 + 55)

= 36 . 100

= 3600

36x45+36x55

=36x(45+55)

=36x100

=3600

36.45+36.55

=36.(45 + 55)

= 36 . 100

=3600

=> x/12 = 121.5 - 121.5 = 0 

=> x = 0.

\(\frac{x}{12}+121.5=121.5\)

\(\Rightarrow\frac{x}{12}+605=605\)

\(\Rightarrow\frac{x}{12}=605-605\)

\(\Rightarrow\frac{x}{12}=0\)

Để \(\frac{x}{12}=0\)

<=> x=0.12

=>    x=0

Vậy x=0

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