What is the solution to the linear equation?

StartFraction 2 Over 5 EndFraction plus p equals StartFraction 4 Over 5 EndFraction plus StartFraction 3 Over 5 EndFraction p. + p = + p

p = 1
p = 2
p = 8
p = 10

1 answer

To solve the linear equation

\[ \frac{2}{5} + p = \frac{4}{5} + \frac{3}{5}p, \]

let's first isolate \( p \).

  1. Start with the original equation: \[ \frac{2}{5} + p = \frac{4}{5} + \frac{3}{5}p. \]

  2. Next, subtract \(\frac{3}{5}p\) from both sides: \[ \frac{2}{5} + p - \frac{3}{5}p = \frac{4}{5}. \] This simplifies to: \[ \frac{2}{5} + \left(1 - \frac{3}{5}\right)p = \frac{4}{5} \] or \[ \frac{2}{5} + \frac{2}{5}p = \frac{4}{5}. \]

  3. Now, subtract \(\frac{2}{5}\) from both sides: \[ \frac{2}{5}p = \frac{4}{5} - \frac{2}{5}. \] Simplifying the right side gives: \[ \frac{2}{5}p = \frac{2}{5}. \]

  4. Finally, divide both sides by \(\frac{2}{5}\): \[ p = 1. \]

Therefore, the solution to the linear equation is

\[ \boxed{1}. \]