8/7^2*7^x-2*7^x-2 = 42 Please answer it fast along with explanation
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Answered by
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Step-by-step explanation:
(8/7)^2 ×(7)^x-2×(7)^x-2=42
64/49 ×(7)^x+x -4 = 42
64-196/49 ×7^2x = 42
-132/49 ×7^2x = 42
7^2x = 42 - 132/49
7^2x = 2058 -132/49
7^2x = 1926/49
.......
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1926/49 is the answer to the question
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