как решить а)-(7 1/16)-5 3/4+1 1/8 б)(10 5/8-12 1/4)-(-0,035-0,04)

Решите задачу:

$1)-7 \frac{1}{16} -5 \frac{3}{4} +1 \frac{1}{8} =-7 \frac{1}{16} -5 \frac{12}{16} +1 \frac{2}{16} = \\ \\ =-6 \frac{17}{16} -5 \frac{12}{16} +1 \frac{2}{16} =-(6 \frac{17}{16} +5 \frac{12}{16} -1 \frac{2}{16} )= \\ \\ -(10 \frac{27}{16} )=-(11 \frac{11}{16} )=-11 \frac{11}{16}$

$2)(10 \frac{5}{8} -12 \frac{1}{4} )-(-0.035-0.04)= \\ \\ =(10.625-12.25)-(-0.075)=-1.625+0.075= \\ \\ =-1.55$