If you have a set `A = [ (1,4,7), (2,5,3), (5,4,9), (2,8,7), (8,6,7), (2,3,5) ] `

.Is it possible to derive:

```
#1 another set A' such that A' = 1.2*A
each element of A' is the scaled version of A
```

```
#2 define a variable like x and a summation like the following
x[1,4,7] + x[2,5,3]+ x[5,4,9]+x[2,8,7]+x[8,6,7]+x[2,3,5] = 5
# not like the following
x[(1,4,7)] + x[(2,5,3)]+ x[(5,4,9)]+x[(2,8,7)]+x[(8,6,7)]+x[(2,3,5)] = 5
```

The only thing operator I know for this case is `...`

but this is not useful either.