Question

We have 100 -40 =60-30=30-12=18 sud 60-30-12 =102 how did you get 102

Answer 1

Answer:

we get 102 because 60-30-12 = 102

you surprise ,

I explain you

we know

-+-= + it's formula depends your questions

first number always is +

60 is +

and formula by 30 and 12 is also + because this number is 2 - so you 30 and 12 added after you find out 42

So,

you added 60+42 = 102

I hope you understand .