1) 12 745 + 255 = 13 000
2)425 892+108 = 426 000
3)214 906 +94 = 215 000
4)530 798 + 202 = 531 000
Ответ:
1) (x+7/15)+5/8=17/24
x+7/15 = 17/24 - 5/8
x+7/15 = 17/24 - 15/24
x+7/15 = 2/24 = 1/12
x+7/15 = 1/12
х = 1/12 - 7/15
х = 5/60 - 28/60
х = - 23/60
2)4 3/4-(x-2 5/8)=3 5/6
x-2 5/8 = 4 3/4 - 3 5/6
x-2 5/8 = 4 9/12 - 3 10/12
x-2 5/8 = 11/12
х = 2 5/8 + 11/12
х = 2 15/24 + 22/24
х = 2 37/24
х = 3 13/24
У меня картинка не открывается
( 15/ 10 ) + 2 = 3.5
( 1.5 / 0.5 ) + 2 = 5
a - ( n × c )
45x + 38y
B*100+500=1000
b*100=1000-500
b*100=500
b =500/100
b =5 проверяем
5*100+500=1000
1000=1000