Question

please do 13 one with method

Answer 1

$- 7 {}^{x + 1 + 7} = - 7 {}^{19} \\ since \: bases \: are \: equal \: we \: can \: equate \: the \: powers \\ x + 8 = 19 \\ x = 19 - 8 = 11$

Therefore x=11

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Answer 2

Step-by-step explanation:

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