198 x 10 = ( m x 10 - 10 x 2 )  What is the value of m ?

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Using the order of operations, we would first multiply:198(10) = 10m -10(2)    1980 = 10m - 20Now add 20 to both sides of the equation to get:2000 = 10mFinally divide both sides of the equation by 10, and we have:200 = m