Question

x+3/8=5/4 alguem pode me ajudar?

Answer 1

8x+3=10
8x=10-3
8x=7
x=7/8

R- x=7/8

Answer 2

  
$x+ \frac{3}{8}x= \frac{5}{4}- \frac{3}{8}x= \frac{28}{32}= \frac{7}{8}$