Giải các phương trình sau:

\(a.\dfrac{5x-2}{3}=\dfrac{5-3x}{2}\)

\(b.\dfrac{10x+3}{12}=1+\dfrac{6+8x}{9}\)

\(c.2\left(x+\dfrac{3}{5}\right)=5-\left(\dfrac{13}{5}+x\right)\)

\(d.\dfrac{7}{8}x-5\left(x-9\right)=\dfrac{20x+1,5}{6}\)

\(e.\dfrac{7x-1}{6}+2x=\dfrac{16-x}{5}\)

\(f.\dfrac{x+4}{5}-x+4=\dfrac{x}{3}-\dfrac{x-2}{2}\)

Giải các phương trình sau:

f. 5 – (x – 6) = 4(3 – 2x)

g. 7 – (2x + 4) = – (x + 4)

h. \(2x\left(x+2\right)^2-8x^2=2\left(x-2\right)\left(x^2+2x+4\right)\)

i. \(\left(x-2^3\right)+\left(3x-1\right)\left(3x+1\right)=\left(x+1\right)^3\)

k. (x + 1)(2x – 3) = (2x – 1)(x + 5)

Giải các phương trình sau:

a/ 3x – 2 = 2x – 3
b/ 7 – 2x = 22 – 3x 
c) 8x – 3 = 5x + 12
d/ x – 12 + 4x = 25 + 2x – 1
e/ x + 2x + 3x – 19 = 3x + 5

Fill each blank with a correct word from the box to finish the passage: be, world, first, different, include, Contries, largest, has, population, with
What are the main English – speaking countries?
 English is perhaps most commonly associated with the United States and the United Kingdom; the two largest English speaking (36) ________. It is believed that there are around 230 Wilton native speakers in the United States, making it the (37) ________ English-speaking country, while the United Kingdom (38) ________ approximately 60 million native speakers

Despite having two (39) ________ official languages, Canada has the third largest English-speaking (40) ________ , with somewhere in the region of 20 million native speakers, while Australia is next in the list, (41) ________ around 17 million. Some of the other notable countries around the (42) ________ where English is the primary language (43) ________ the Republic of Ireland, South Africa and New Zealand. Combined, these three countries are believed to (44) ________ home to around 13 million people who speak English as their (45) ________ language