Question

РЕШИТЕ ПЛИЗ ДАЮ 20 БАЛОВ ( 2 1/3 + 3,5) / ( - 4 1/6 + 3, 25 ) + 2 4/11 ;
0,725+0,6+7/40+11/20
-------------------------------- ( ОБЫКНОВЕННАЯ ДРОБЬ )
0,128 *6 1/4 - 0,0345/3/25 ;
1 75/100-51/34

Answer 1

1)
$\frac{2 \frac{1}{3}+3,5 }{-4 \frac{1}{6} +3,25} + 2 \frac{4}{11} = ( \frac{7}{3} + \frac{7}{2} ) : (- \frac{25}{6} + \frac{13}{4} ) + 2 \frac{4}{11}= \\ \\ = \frac{14+ 21}{6} : \frac{-50+39}{12} + 2 \frac{4}{11} = \frac{33}{6} * (-\frac{12}{11}) + 2 \frac{4}{11} = \\ \\ = - \frac{3*2}{1*1} + 2 \frac{4}{11} = -6 + 2 \frac{4}{11} =- 3 \frac{7}{11}$

2) 
$\frac{0,725+0,6+ \frac{7}{40}+ \frac{11}{20} }{0,128*6 \frac{1}{4}-0,0345 : \frac{3}{25} } = \frac{1,325+ \frac{29}{40} }{0,128 *6,25-0,0345:0,12} = \\ \\ = \frac{1,325+ 0,725}{0,8- 0,2875} = \frac{2,05}{0,5125} = 4$

3) $1 \frac{75}{100} - \frac{51}{34} = 1,75 - 1,5= 0,25$