Kết quả của mk bằng : 2 chi chăm chỉ k mk nha

x+45=100

x=100-45

x=55

Vậy x=55

a) Ta có:

\(\frac{23}{3}=\frac{21+2}{3}=\frac{21}{3}+\frac{2}{3}=7+\frac{2}{3}\)

\(\frac{15}{2}=\frac{14+1}{2}=\frac{14}{2}+\frac{1}{2}=7+\frac{1}{2}\)

Lại có:\(1-\frac{2}{3}=\frac{1}{3}< 1-\frac{1}{2}=\frac{1}{2}\Rightarrow\frac{2}{3}>\frac{1}{2}\)

\(\Rightarrow\frac{23}{3}>\frac{15}{2}\)

\(12^3x3^3=36^3=46656\)

5x4=20

4x5=20

6x9=54

0x9=0

\(123+345+678\)

\(=468+678\)

\(=1146.\)

5x4=20

4x5=20

6x9=54

0x9=0

k ủng hộ mik nha!!!

Ta có: 4x² - 12x  + 9 = 0

=> (2x - 3)² = 0

=> 2x - 3 = 0 

=> x = 3/2

                               Vậy x = 3/2