\(-15+\left(-24\right)=-39\)

\(2,5-3x=5,5.2022^0\)

\(=>2,5-3x=5,5.1\)

\(=>2,5-3x=5,5\)

\(=>3x=2,5-5,5\)

\(=>3x=-3\)

\(=>x=\left(-3\right):3\)

\(=>x=\dfrac{-3}{3}=-1\)

Vậy...

\(#NqHahh\)

\(2\left(x-3\right)+4=2\dfrac{1}{2}\)

\(=>2\left(x-3\right)+4=\dfrac{5}{2}\)

\(=>2\left(x-3\right)=\dfrac{5}{2}-4=\dfrac{5}{2}-\dfrac{8}{2}\)

\(=>2\left(x-3\right)=\dfrac{-3}{2}\)

\(=>x-3=\dfrac{-3}{2}:2=\dfrac{-3}{2}.\dfrac{1}{2}\)

\(=>x-3=\dfrac{-3}{4}\)

\(=>x=\dfrac{-3}{4}+3=\dfrac{-3}{4}+\dfrac{12}{4}\)

\(=>x=\dfrac{9}{4}\)

Vậy...

\(#NqHahh\)

I don't think he must go out now.

@Nguyên Quang Tâm

Trong đề cho biết bán kính thì có thể đó là hình tròn bạn nhé!

Chu vi của miếng bìa đó là:

\(0,55\times2\times3,14=3,454\left(dm\right)\)

Đáp số: 3,454 dm.

\(#NqHahh\)

I'm from Vietnam.

Yes I do.

On Sundays, I listen to music, learn English and play sports.

My favourite animal is Capybara.

_____ Tips ___

\(-\) Where: Ở đâu? --> I'm from + nước ( nơi mình đang sống).

\(-\) Do you: Câu hỏi yes / no. \(\rightarrow\)Yes I do - No I don't.

\(-\) What do you do sth + Days : Bạn làm cái gì đó (vào thời gian....)?

\(\rightarrow\) S + V + days.

\(-\) What your favourite + sth: Cái gì đó mà bạn yêu thích?

\(\rightarrow\) My favourite + sth + is.....

\(\rightarrow\) It is .....

\(#NqHahh\)

\(153\times2\times0=0\)

\(#NqHahh\)

\(\dfrac{3}{8}+\left(x-\dfrac{5}{24}\right):\dfrac{2}{3}=1\)

\(=>\left(x-\dfrac{5}{24}\right):\dfrac{2}{3}=1-\dfrac{3}{8}=\dfrac{8}{8}-\dfrac{3}{8}\)

\(=>\left(x-\dfrac{5}{24}\right):\dfrac{2}{3}=\dfrac{5}{8}\)

\(=>x-\dfrac{5}{24}=\dfrac{5}{8}\times\dfrac{2}{3}\)

\(=>x-\dfrac{5}{24}=\dfrac{5}{12}\)

\(=>x=\dfrac{5}{12}+\dfrac{5}{24}=\dfrac{10}{24}+\dfrac{5}{24}\)

\(=>x=\dfrac{15}{24}=\dfrac{5}{8}\)

\(#NqHahh\)

\(10+20+30=60\)