-3/x+1 . x-2/2 = (-3)(x-2)/ (x+1).2 = -3x+6/2x+2 nguyên 
<=> -3x+6 chia hết cho 2x+2
<=> 3x-6 chia hết cho 2x +2 
=> 2(3x-6)-3(2x+2) chia hết cho 2x +2
=> 6x-12-6x-6 chia hết cho 2x+2
=> 18 chia hết cho 2x +2 
bn tự giải típ nhé

\(x^7.x.x^4=x^{7+1+4}=x^{12}\)

Bg

Ta có: x⁷.x.x⁴ = x^{7 + 1 + 4} = x¹²

\(3^4.3=3^5\)

\(3^4.3\)

học tốt

1. Ben is Frank's grandson

2. Tracy is Maureen's granddaughter

3.  Adam is lan's uncle

4. Millie is Tracy's aunt

5. lan and Ben are Anna's cousin

6. Frank and Maureen is Tracy's grandparents

7. lan and Ben is Adam's nephew

8. Tracy is Millie's niece

9. Frank and Maureen is Peter's parent-in-law

10. Millie is Ellen's sister

My family

My name is Ellen and my husband’s name is Peter. We have got three children – two sons and a daughter. Our son’s names are Ian and Ben. They are twins, but they are not idenal. Ian’s got dark hair, but Ben’s hair is fair. Our daughter’s name is Tracy. She is eight years old. The boys are four. My father’s name is Frank and my mother’s name is Maureen. I’ve got two younger brothers, called Adam and Bobby. Adam is married. His wife’s name’s Ulrike. She is from Sweden and she’s got long, blond hair. They’re got a baby daughter called Anna. So my parents have gotj four grandchildren – two grandsons and two granddaughters. My husband’s got an oldder sister, but he hasn’t got any brothers. His sister’s name’s Millie. She is still single.

1. Ben is Frank’s grandson

2. Tracy is Maureen’s granddaughter

3. Adam is Ian’s uncle

4. Millie is Tracy’s aunt

5. Ian, Ben are Anna’s cousin

6. Frank and Maureen are Tracy’s grandparents

7. Ian and Ben are Adam’s nephew

8. Tracy is Millie’s niece

9. Frank and Maureen are Peter’s parents in law

10. Millie is Ellen’s sister

1. REFRIGERATOR

2. ARMCHAIR

3. SHOWER

4. DRYER

5. DISHWASHER

6. STOVE

7. TELEPHONE

8. WARDROBE

9. COOKER

10. IRON

1. what a beautyful girl !

III. Em hãy viết các câu cảm thán, sử dụng các từ gợi ý sau:

1. What  a beautiful girl !

2. What a bad  weather we have ! 

3. What an awful meal  it  be !

4. What a difficult exercise/ my brother  have !

5. What an interesting  stories they be !

\(x+\frac{4}{12}-1+\frac{2}{3}=-2+\frac{3}{4}\)

\(\Leftrightarrow\frac{12x+4-12+8}{12}=\frac{-24+9}{12}\)

\(\Leftrightarrow12x=-15\)

\(\Leftrightarrow x=-\frac{5}{4}\)

Tìm x

\(x+\frac{4}{12}-1+\frac{2}{3}=-2+\frac{3}{4}\)

\(x+\frac{1}{3}-1+\frac{2}{3}=-\frac{8}{4}+\frac{3}{4}\)

\(x+\left(\frac{1}{3}-1+\frac{2}{3}\right)=-\frac{5}{4}\)

\(x+\left(\frac{1}{3}-\frac{3}{3}+\frac{2}{3}\right)=-\frac{5}{4}\)

\(x+0=-\frac{5}{4}\)

\(x=-\frac{5}{4}\)

Vậy \(x=-\frac{5}{4}\).