-23.45-x=-8 1/5
First let's make -23.45 into a fraction:
-2345/100
Simplify by dividing both sides by 5
-469/20
-469/20-x=-8 1/5
Make the denominator of 8 1/5 into 20 so it has the same denominator as -469/20
8 4/20
Make it an improper fratcion:
164/20
-469/20-x=-164/20
-x=469/20-164/20
-x=305/20
Simplify by dividing each side of the fraction by 5:
-x=61/4
Make it into a mixed number:
-x=15 1/4
x=-15 1/4 or x= -15.25
Hope this helps :)