25​x+2022​−3x+∣−2022∣​=2x​+1011

\(\frac{x+2022}{\sqrt5}-\frac{x + 2022}{3}-\frac{x + 2022}{2}=0\)

\(\left(\right. \frac{1}{5} - \frac{1}{3} - \frac{1}{2} \left.\right) \left(\right. x + 2022 \left.\right) = 0\)

\(\left(\right. x + 2022 \left.\right) = 0\)

\(x = - 2022\).

a.3,12
b.7 343 000

a) \(5 , 3.4 , 7 + \left(\right. - 1 , 7 \left.\right) . 5 , 3 - 5 , 9\)
= 5,3.[4,7+(-1,7)]-5,9
= 5,3.3-5,9
= 15,9-5,9
= 10
b) \(\frac{2}{3} + \frac{- 1}{3} + \frac{7}{15}\)
= 10/15 + -5/15 + 7/15
=12/15 = 4/5

a.38
b.36,40,42

a-1=2
a =2+1
a = 3

☺

a-1=2
a =2+1
a =3

Bạn An đứng cách xa bạn Bình số m là:
6100.0,4=2440