Question

С.найдите значение выражений. а)3+1/2-5-1/4) б)4-10+1/5-2/10 в)5+9/11-7-3/22 г)-7/15-2/3-2+7 д)-3+7/18-7/18+2/9 е)5/27-4/9-3+1.

Answer 1

А) 3 + 1/2 - 5 - 1/4 = 3 2/4 - 5 - 1/4 = - 1 2/4 - 1/4 = -1 3/4
б) 4 - 10 + 1/5 - 2/10 = -6 + 1/5 - 1/5 = -6
в) 5 + 9/11 - 7 - 3/22 = 5 18/22 - 7 - 3/22 = 5 15/22 - 7 = - 1 7/22
г) -7/15 -2/3 -2 + 7 = -7/15 - 10/15 -2 + 7 = -17/15 + 5 = - 1 2/15 + 5 = 3 13/15
д) -3 + 7/18 -7/18 + 2/9 = -3 + 2/9 = - 2 7/9
е) 5/27 - 4/9 -3 + 1 = 5/27 - 12/27 -2 = -7/27 -2 = -2 7/27

Answer 2

А)3+1/2-5-1=6+1-10-2=-3-2=-10;
б)4-10+1/5-2/10=20-50+1-1=-30;
в)5+9/11-7-3/22=110+18-154-3=-29;
г)-7/15-2/3+7=-7-10+135=-17+135=118;
д)-3+7/18-7/18+2/9=-54+7-7+4=-50;
е)5/27-4/9-3+1=5-12-81+27=-61;