1-к=3 + 1
___ ___
5 10
1-к= 6 + 1 = 7
__ __ __
10 10 10
к= 1 - 7 = 3
__ __
10 10
к=3
__
10
2) t + 1 = 4 + 2
__ __
9 3
t + 1 = 4 + 6
__ __
9 9
t + 1 = 1 1
__
9
t = 1 1 - 1
__
9
t = 1
__
9
3) x + 23 = 51 - 13
__ __ __
8 4 8
x + 23 = 102 - 13
__ ___ __
8 8 8
x + 23 = 89
__ __
8 8
x = 89 - 23
__ __
8 8
x = 66 = 8 1
__ __
8 4