7. If 8 x 3^4x+3 + 3^11 = 3^13, find x.
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Answer:
x=2186.9
Step-by-step explanation:
8×81x+3+177147=1594323
648x+177150=1594323
648x=1594323-177150
x=1417173÷648
x=2186.9
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