5 x 6 = 30

5 x 9 = 45

7 x 7 = 49

12 x 2 = 24

7 x 6 = 42

Tick đúng nha !!!

ai nhanh nhất mình **** cho

7x1=7

7x2=14

7x3=21

7x4=28

7x5=40

7x6=42

7x7=49

7x8=56

7x9=63

7x10=70

7x1=7

7x2=14

7x3=21

7x4=28

7x5=35

7x6=42

7x7=49

7x8=56

7x9=63

7x10=70

7×1=7

7×2=14

7×3=21

7×4=28

7×5=35

7×6=42

7×7=49

7×8=56

7×9=63

7×10=70

<tích cho mk nhé>

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=12/63=4/21

121/4

2/7 x6/9=12/63

rút gọn đi nhé

\(B=\dfrac{2\cdot8^4\cdot27^2+4\cdot6^9}{2^7\cdot6^7+2^7\cdot40\cdot9^4}\)

\(B=\dfrac{2\cdot\left(2^3\right)^4\cdot\left(3^3\right)^2+2^2\cdot2^9\cdot3^9}{2^7\cdot2^7\cdot3^7+2^7\cdot2^2\cdot10\cdot\left(3^2\right)^4}\)

\(B=\dfrac{2\cdot2^{12}\cdot3^6+2^{11}\cdot3^9}{2^{14}\cdot3^7+2^9\cdot10\cdot3^8}\)

\(B=\dfrac{2^{11}\cdot2^2\cdot3^6+2^{11}\cdot3^6\cdot3^3}{2^{11}\cdot2^3\cdot3^6\cdot3+\dfrac{2^{11}}{2^2}\cdot10\cdot3^6\cdot3^2}\)

\(B=\dfrac{\left(2^{11}\cdot3^6\right)\left(2^2+3^3\right)}{\left(2^{11}\cdot3^6\right)\left(2^3\cdot3\right)+2^{11}\cdot\dfrac{1}{2^2}\cdot10\cdot3^6\cdot3^2}\)

\(B=\dfrac{\left(2^{11}\cdot3^6\right)\left(2^2+3^3\right)}{\left(2^{11}\cdot3^6\right)\left(2^3\cdot3+\dfrac{1}{2^2}\cdot10\cdot3^2\right)}\)

\(B=\dfrac{2^2+3^3}{2^3\cdot3+\dfrac{1}{2^2}\cdot10\cdot3^2}\)

\(B=\dfrac{4+27}{8\cdot3+\dfrac{1}{4}\cdot10\cdot9}\)

\(B=\dfrac{31}{24+\dfrac{1}{4}\cdot90}\)

\(B=\dfrac{31}{24+\dfrac{45}{2}}\)

\(B=\dfrac{31}{\dfrac{48}{2}+\dfrac{45}{2}}\)

\(B=\dfrac{31}{\dfrac{93}{2}}\)

\(B=31\div\dfrac{93}{2}\)

\(B=31\times\dfrac{2}{93}\)

\(B=\dfrac{2}{3}\)

phép tính này lạ quá

7 x 7 -5 =44

8 x 2+ 9=25

1 x 1 +1=2

7*7-5=44

8*2+9=25

1*1+1=2

Hok tốt

7x7 - 5 = 49 - 5 = 44

8X 2 + 9 = 16 + 9 = 25

1 x 1 + 1 = 1 + 1 = 2

\(=\dfrac{3}{7}\cdot\dfrac{7}{3}\cdot\dfrac{7}{3}\cdot\dfrac{3}{7}\cdot\dfrac{7}{3}=1\cdot1\cdot\dfrac{7}{3}=\dfrac{7}{3}\)