AC= 2x-7, BC= x-3, AB= 8. find x
2 answers:
☆solve for AB:
→ AB = AC - BC
→ AB = 2x - 7-(x-3)
→ AB = 2x - x - 7+3
→ AB = x - 4
given, AB = 8
☆solve for x:
→ x - 4 = 8
→ x = 8 + 4
→ x = 12
Answer:
x = 12
consider this a straight line:
A B C
-------------------------------------------------
<u>solve for AB</u>:
⇒ AB = AC - BC
⇒ AB = 2x - 7 - ( x - 3 )
⇒ AB = 2x - x - 7 + 3
⇒ AB = x - 4
<u>solve for x</u>:
⇒ x - 4 = 8
⇒ x = 8 + 4
⇒ x = 12
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