Question

помогите решить срочно !!!!!!
Вычислите; 1) 2 2/5-(1/4+7/10);
2) 9-(1 5/8 +3/20);
3) 3-(1/6+2/3);

Answer 1

1) 2 2/5-(5/20+14/20)= 2 2/5- 19/20= 12/5-19/20= 48/20-19/20= 29/20= 1 9/20
2) 9-(13/8+3/20) =9- (65/40-6/40)= 9-59/40= 9-1,475= 7, 525
3) 3-(1/6+4/6)= 3-5/6= 2 6/6-5/6= 2 1/6