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Teacher

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$f(x)+g(x)$

$(200x+25)+(175x−15)$

RemoveParRemove parentheses

$200x+25+175x−15$

AddSubTermsAdd and subtract terms

$375x+10$

b

$f(x)−g(x)$

$(200x+25)−(175x−15)$

RemoveParRemove parentheses

$200x+25−(175x−15)$

DistrDistribute $(-1)$

$200x+25−175x+15$

AddSubTermsAdd and subtract terms

$25x+40$