20 30. Seven friends have similar cell phone plans. The price dengan Three of the seven friends pay an extra 54 per month for messaging. Write and simplify an expression that represents the total cost of the seven plans.
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Hi there! Your picture had a different question than your typed question, so I'll just assume you meant to type the question on the picture.
Someone has already solved this, here's the link:
https://brainly.com/question/1123059