If ABC type question, then sometimes. If its extended, then only when the lines coincide with each other or if one of the lines aren't linear.
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I believe it is proposition
Answer:
x=-26
Step-by-step explanation:
Subtract 45 from both sides.
-85-45=5x
Simplify -85-45 to -130
-130=5x
Divide both sides by 5.
-130/5=x
Simplify 130/5 to 26
-26=x