To get the value of DK we use proportionality:
AK/EK=BK/KD
thus plugging the values we get:
14/17=7/KD
getting the reciprocal of getting both sides we have:
17/14=KD/7
thus
KD=17/14×7
KD=8.5
thus
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Step-by-step explanation:
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2x+7=x+3
2x+7=3
-×
x+7=3
-7 -7
x=-4
