Question

100-40 =60 60-30 =30 30-18=12 12-12=0 60+30+12=102how is possible

Answer 1

here give that

100-40=60....(1
60-30=30......(2
30-18=12.....(3
12-12=0.....(4
we will sum 4 equation

100-40+60-30+30-18+12-12=60+30+12

=102

Answer 2

Answer:

Here’s how it is possible,

Given:

100-40=60....(1)

60-30=30......(2)

30-18=12......(3)

12-12=0........(4)

After adding all the four equations, i.e., (1)+(2)+(3)+(4)

100-40+60-30+30-18+12-12 = 60+30+12 = 102

It is a simple mathematical calculation where we can very easily compute the value by simple subtraction and addition operations. The value of 60+30+12 = 120, while we add the 4 equations, we get the same result.

This is how it is possible. You can yourself practice the question and find out the solution.