Question

301 - x + 72 = 64 . (X - 21)  ai đó giup tôi với!!!!

Answer 1

301 - x + 72 = 64 . (x - 21)

301 - x + 72 = 64x - 1344

301 + 72 + 1344 = 64x + x

1717 = 65x

=> x = 1717/65

Chúc em học tốt!!!

Answer 2

\(301-x+72=64\left(x-21\right)\)

\(\Leftrightarrow301+72-x=64x-1344\)

\(\Leftrightarrow373-x=64x-1344\)

\(\Leftrightarrow373+1344=64x+x\)

\(\Leftrightarrow1717=65x\)

\(\Leftrightarrow x=\frac{1717}{65}\)

\(\text{Vậy }x=\frac{1717}{65}\)

Answer 3

301 - x + 72 = 64 . (x - 21)

301 - x + 72 = 64x - 1344

301 + 72 + 1344 = 64x + x

1717 = 65x

=> x = 1717/65