Numbers of rows … __ + __ = __
Numbers of columns …
____ + ____ + ___ + ___ = ___
Numbers of rows … ___ + ___ + __ = __
Numbers of columns … …….
____ + ___ = ____
Numbers of rows ….. _____ + _____ + ____ = ____
Numbers of columns ….. __+ __ + __+ __ +__ = ___
49