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