\(\left(3x-2^4\right).7^3=2.7^4\)

\(=>3x-2^4=2.7^4:7^3\)

\(=>3x-2^4=2.7=14\)

\(=>3x=14+2^4\)

\(=>3x=30\)

\(=>x=30:3\)

\(=>x=10\)

Vậy..

Kiểm tra lại đáp án nha bnn.

( \(3\dfrac{1}{3}=\dfrac{3.3.1}{3}=\dfrac{10}{3}\) )

\(3\dfrac{1}{3}x+16\dfrac{3}{4}=-13,25\)

\(\Leftrightarrow\dfrac{10}{3}x+\dfrac{67}{4}=\dfrac{-53}{4}\)

\(\dfrac{10}{3}x=\dfrac{-53}{4}-\dfrac{67}{4}\)

\(\dfrac{10}{3}x=\dfrac{-120}{4}=-30\)

\(x=-30.\dfrac{3}{10}\)

\(x=\dfrac{-90}{10}=-9\)

1. My name's Mai

\(=>\) What is your name?

2. I'm in class 5B, Nguyen Du Primary School.

\(=>\) What class are you in?

3. My school year started in August

\(=>\) When does your school start the school year?

4.I go to school every day except Saturday and Sunday?

\(=>\) What days do you go to school?

5. I have four lessons a day

\(=>\) How many lessons do you have a day?

6. Today is Wednesday

\(=>\) What day is it today?

7. I have Maths, Vietnamese, Music and English

\(=>\) What subjects do you have on Wednesdays?

8. I have Maths and Vietnamese every schoolday.

\(=>\) When do you have Maths and Vietnamese?

9. I have Music once a week and English four times a week.

\(=>\) How often do you have Music and English?

#Wendy Dang

umm ^^

Ghê dữ bnn :)) _{khâm phục quá}