Multiply both sides by x
75=9x
Flip the equation
9x=75
divide both sides by 9
9x/9=75/9
x=25/3
x= 8.3 or 8
so the number is 8 or you can also put 8.3
Check the answer
75/8.3= 9.03
or 75/8= 9.3
I hope that's help.
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