Найди значение выражения7/20 - ( 9/35 -3/28 )

7/20 - ( 9/35 -3/28 )=7/20 - 9/35+3 /28=6860/19600- 5040/19600 + 2100/19600= 3920/19600= 0.2; х = 0.2

Hi dear santa clause. i am (твое имя).for this year my wishes are a little different from last year. i grow up, my outlook has been changed. dear santa claus for this year i have a special wish, i want peace all over the world, please if you can realise my dream, make it come true.peace is a special valuable condition, and every country, everyone needs it. dear santa i would like you to stop the time for that people who didn't manage to do something importanat.i want you to stop the hunder all over the world, that every hungry child and man has a fridge full of food. dear santa we know that because of dangerous  diseases people die, please santa    stop the all deseases , let people live forever, without mixing up with each other. santa i hope you will make my wishes come true. good bye see you on christmas.