Question

(18 1/6-(3, 06: 7 1/2+ 3 2/5 ×0, 38))×(19-2 3/8×5 1/3)

Answer 1

$( 18 \frac{1}{6} -(3, 06:7 \frac{1}{2} + 3 \frac{2}{5} *0, 38))*(19-2 \frac{3}{8} *5 \frac{1}{3} )=104 \frac{13}{45}$
1) $3, 06:7 \frac{1}{2} =3,06:7,5=0,408$
2) $3 \frac{2}{5} *0, 38=3,4*0,38=1,292$
3) $0,408+1,292=1,7$
4) $18 \frac{1}{6} -1,7=18 \frac{1}{6} -1 \frac{7}{10} =18 \frac{10}{60}-1 \frac{42}{60} =16 \frac{28}{60}=16 \frac{7}{15}$
5) $2 \frac{3}{8} *5 \frac{1}{3} = \frac{19}{8}* \frac{16}{3} = \frac{19}{1} * \frac{2}{3} = \frac{38}{3}=12 \frac{2}{3}$
6) $19-12 \frac{2}{3} =6 \frac{1}{3}$
7) $16 \frac{7}{15} *6 \frac{1}{3} = \frac{247}{15} * \frac{19}{3} = \frac{4693}{45}=104 \frac{13}{45}$