Iɴ /\ABC ,ᴅᴇ//ʙᴄ. Fɪɴᴅ x
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x÷x+1 = x+3÷x+5 (BASIC PROPORTIONALITY THEOREM)
cross multiplication
x(x+5) = (x+1)(x+3)
x2+ 5x=x2+ 3x+x+3
5x-4x=3
x=3
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