Over the last 6 months, Josh wrote 6 checks for a total of $702 to pay his phone bill. His phone bill is the same amount each month. What was the change in Josh’s bank account balance each month after paying his phone bill?

Josh's phone bill each month is $702 / 6 = $<<702/6=117>>117.

So the change in Josh’s bank account balance each month is $117. Answer: \boxed{117}.

To find the change in Josh's bank account balance each month, we need to divide the total amount he paid for his phone bill by the number of months.

First, let's calculate the amount Josh paid each month:

Total amount paid = $702
Number of months = 6

Amount paid each month = Total amount paid / Number of months

Amount paid each month = $702 / 6 = $117

Therefore, Josh's bank account balance decreased by $117 each month after paying his phone bill.

To find the change in Josh's bank account balance each month, we need to divide the total amount he spent on his phone bill by the number of months.

First, let's calculate the average amount Josh spent on his phone bill each month. We divide the total of $702 by the number of months, which is 6:

$702 / 6 = $117

So, Josh spent an average of $117 per month on his phone bill.

To find the change in his bank account balance each month, we need to subtract the amount he spent on his phone bill from the previous month's balance. It is important to note that we would need the starting balance of Josh's bank account to calculate the exact change in his account balance. However, since it was not provided in the question, we can assume there was no change in the starting balance.

So, assuming there was no change in the starting balance, the change in Josh's bank account balance each month after paying his phone bill would be -$117.

Please note that this assumes Josh's only expense was his phone bill and that he did not earn or spend any additional money during these 6 months.