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OpenStudy (anonymous):
Solve. 7^x – 5 = 7^4x + 7
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OpenStudy (anonymous):
x = –4 x = negative 12 over 5 x = 2 over 3 x = 4
OpenStudy (anonymous):
Is it \(\large 7^{x - 5} = 7^{4x + 7} ?\)
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
They have common bases, so just drop the bases. x - 5 = 4x + 7 Can you solve now?
OpenStudy (anonymous):
is it 2/3?
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OpenStudy (anonymous):
or just 4? I' don't think I'm doing the math right
OpenStudy (anonymous):
4x + 7 = x - 5 3x = -12 x = -4
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