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how do you work this problem?a/-9=2

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1 Answer

Don't let the minus sign confuse you.
 
Just multiply both sides of the equation by -9:
 
I'll include extra parentheses for more clarity.
 
a / (-9) = 2
 
(a) * (-9) / (-9) = 2 * (-9)
 
a * 1 = -18
 
a = -18