(654+289) - 254=943-254=689
854 + (249-154) = 854+95=949
(747+896) - 236=1643-236=1407
(348+252) - 299=600-299=301
(227+358) - (127+258) = 585-385=200
(654+289) - 254=943-254=689
854 + (249-154) = 854+95=949
(747+896) - 236=1643-236=1407
(348+252) - 299=600-299=301
(227+358) - (127+258) = 585-385=200