Question 1036382
L = 3W-4
and
2L+2W = 40 Substitute for L:
2(3W-4)+2W = 40
6W-8+2W = 40
8W = 48
W = 6 This is the width, and the Length:
L = 3(6)-4 = 14
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Check:
2(6)+2(14)= 40
12+28 = 40 Correct.