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01-05-2020
Mathematics

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lucasella lucasella

01-05-2020

Δ JKL~ ΔJST=> JK/JS=KL/ST=JL/JT

JK=63; JS=2x-6; JL=45; JT=10

63/(2x-6)=45/10

63/(2x-6)=9/2

9(2x-6)=63*2 /:2

9(x-3)=63

x-3=63:9

x=7+3

x=10

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