Question
The total mass of Lucy, Gavin and Jackson is 97 kg. Gavin's mass is 7 kg more than Lucy's and 19 kg more than Jackson's. Find the total mass of Lucy and Jackson.
4 m

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The total mass of Lucy, Gavin and Jackson is 97 kg. Gavin's mass is 7 kg more than Lucy's and 19 kg more than Jackson's. Find the total mass of Lucy and Jackson.