(5 x 10^6)+(2 x 10^3)+(1 x 10^2)+(9 x 10^1)
Answer:
the interest =20.74
whereas the total sum=8850(the sum is the nearest cent)
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X=-56/3
multiply everything by 4 to cancel the fraction which will give you
3x+20=-36
then combine like terms to get
3x=-56
then divide to get x by itself to get
x=-56/3
since this is a weird decimal, leave it as an improper fraction