Find x if the perimeter of a rectangle is 140. The rectangle has a length of 5x and a width of 4x-2.
1 answer:
Answer:
x=8
Step-by-step explanation:
p=(l+b)
140=2(x+4x-2)
140=2(9x-2)
140=18x-4
140+4=18x
144=18x
144/18=x
8=x
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