Jim weighs 30 pounds less than Tom, and together they weigh 210 pounds. Let n Tom's weight in pounds. What would be the equation that expresses the total of Jim's and Tom's weights?
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let tom be n
jim = n -30
jim + n = 210
n - 30 + n = 210 ( ah i guess this eqn is your ans)
2n = 240
n = 120
jim = 90
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