x =

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4 − log(7 − x) = 3

log(7 − x) = 1

7 − x = e

x = 7 - e

x = 4.2817

answer incorrect

ok wait

i think thats because

log(x) = ln(x) / ln(10)

i will give you the right answer for all just wait

ln(7 − x) / ln(10) = 1

ln(7 − x) = ln(10)

7 - x = 10

x = -3

test it now

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