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9 would be correct

Step-by-step explanation:

9

Step-by-step explanation:

Substitute each value in for w:

2w+2(2w+3)=60

2(6)+2(2(6)+3)=60

12+2(12+3)=60

12+2(15)=60

12+30=60

42≠60

2(7)+2(2(7)+3)=60

14+2(14+3)=60

14+2(17)=60

14+34=60

48≠60

2(8)+2(2(8)+3)=60

16+2(16+3)=60

16+2(19)=60

16+38=60

54≠60

2(9)+2(2(9)+3)=60

18 + 2(18+3)=60

18+2(21)=60

18+42=60

60=60

here is the

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