Question

how 10-20-50-10=30 solve this problem. ​

Answer 1

Answer:

$10 - 20 - 50 - 10 = 30 \\ \\ - 70 = 30$

It's wrong...

Answer 2

Answer:

10-20-50-10=30

-70=30

-70 is not equal to 30

so it is wrong