Question

15 1/8 -а=7 8/5+ 4 3/8

Answer 1

15 1/8 -а=7 8/5+ 4 3/8
$15 frac{1}{8} - a = 7 frac{8}{5} + 4 frac{3}{8}$
$15 frac{1}{8} -a = frac{43}{5} + frac{35}{8}$
$15 frac{1}{8} -a = frac{8*43}{8*5} + frac{5*35}{5*8}$
$15 frac{1}{8} - a = frac{344}{40} + frac{175}{40}$
$15 frac{1}{8} - a = frac{519}{40}$
$15 frac{1}{8} + frac{519}{40} = a$
$a = frac{121}{8} + frac{519}{40}$
a = $frac{5*121}{5*8} + frac{519}{40}$
$a = frac{605}{40} + frac{519}{40}$
$a= frac{1124}{40} =28 frac{1}{10}$

Answer 2

огромное спасибо