solve for x so plz help

Answer:
x = 7
Step-by-step explanation:
AB + BC = AC
2x - 13 + 2x - 7 = 8
2x + 2x - 13 - 7 = 8
4x - 20 = 8
+20 +20
--------------------------
4x = 28
/4 /4
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x = 7
Answer:
x = 7
Step-by-step explanation:
AB + BC = AC
plug in the values and solve for x