How do you factor $p r + 7 p + t r + 7 t$ $pr + 7p + tr + 7t$ ?

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Answer 1 · 2016-07-09T11:47:02

$p r + 7 p + t r + 7 t = (p + t) (r + 7)$ $pr+7p+tr+7t =(p+t)(r+7)$

$p r + 7 p + t r + 7 t = (p r + 7 p) + (t r + 7 t)$ $pr+7p+tr+7t = (pr+7p)+(tr+7t)$

$= p (r + 7) + t (r + 7)$ $=p(r+7)+t(r+7)$

$= (p + t) (r + 7)$ $=(p+t)(r+7)$

How do you factor pr + 7p + tr + 7tpr+7p+tr+7tpr + 7p + tr + 7t?