Question

isn't u think that while subtracting when we give carry to another small number so in the place of 13 there should be 4 as we give one no. carry to other one and the no. which gives carry reduce

so as per mention above when we give one no. carry to other no. so it will be 3 + 1 = 4 ..

why we write 13 there..

I know it is the concept of maths
but why..

needed explanation​

Answer 1

because we need a bigger numbers and mention as we carry we don't have to plus we have to subtract