If 9x-13=-31, how do you find the value of x-8?

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Answer 1 · 2016-10-19T08:35:41

#x-8=-10#

#9x-13=-31#

Add #13# to each side.

#9x=-31+13#

#9x=-(31-13)#

#9x=-18#

Divide both sides by #9#.

#x=-2#

Since we have to find the value of #x-8#, subtract 8 from each side.

#x-8=-2-8#

#x-8=-(2+8)#

#x-8=-10#