3x + 6 = 39

3x = 33

x = 11

answer: 11,13,15

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L = 3W + 2

P = 2L + 2W

600 = 2 (3W + 2) + 2W

600 = 8W + 4

596 = 8W

W = 74.5

L = 225.5

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T = 2L

2L + L = 12

3L = 12

L = 4

T = 8

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x 1st#, (x + 1) 2nd, (x + 2) 3rd

3x = 2 (x + 1) + 4

3x = 2x + 6

x = 6

2w+2(2+3w)=600 ; w is the width of the rectangle

2x+x=12 ; x is the no of lettuce heads

3x=4+2(x+1); x is the smallest of the consecutive integers

1) 39=X+(x-2)+(x-4) or 39=3X-6 or 45=3x or x=15; so

15+13+11 = 33

2)If the width is w and the length is l; then 2w+2L=600; and since l=2*(3W); then 2w+2*(2*(3W))=600 then w=? you do the math.

3)If lettuce is L and Tomatoes is T then T+L=12 or and L=2T so 3T=12

and you lost me on the 4th