Heather has $500 in her savings account she withdraws $20 per week for gas red and equation header can you sissy how many weeks it will take her to have a balance of $220

500-20x>or equal to 220
Subtract -500 from both sides because it is the inverse of 500
Then 220 minus 500 equals-280 then divide -20 on both sides -280 divided by -20 equals 14
Answer is X is Flip the sign because you divided by a negative