Repeated t as x

5+5+5

This repeated addition is the same as 3x5=15

2+2+2+2

This repeated addition is the same as 4x2=8

1+1+1+1

This repeated addition is the same as 4x1=4

6+6+6

This repeated addition is the same as 3x6=18

3+3+3+3

This repeated addition is the same as 4x3=12,