14 ten thousands + 12 thousands

152,000

Explanation:
First, we will need to translate the words into numbers and then we will perform the addition.

1- translating the words into numbers:
ten thousands means 10,000
14 ten thousands means 14 * 10000 = 140000
thousands means 1000
12 thousands means 12000

2- Performing the addition:
14 ten thousands + 12 thousands
= 140000 + 12000
= 152000

Hope this helps :)