Question

tìm x biết 45% nhân x + x =4,35

Answer 1

\(45\%x+x=4,35\)

\(\Leftrightarrow\frac{45}{100}x+x=4,35\)

\(\Leftrightarrow x\left(\frac{45}{100}+1\right)=4,35\)

\(\Leftrightarrow\frac{145}{100}x=\frac{435}{100}\)

\(\Leftrightarrow x=\frac{435}{100}\div\frac{145}{100}\)

\(\Leftrightarrow x=3\)

Answer 2

Ta có :

45%*x + x = 4,35

0,45 * x + x = 4,35

x * ( 0,45 + 1 ) = 4,35

x * 1,45 = 4,35

x = 4,35 : 1,45

x = 3

~Hok tốt~

Answer 3

thank