I need some assistance. Please someone help.

What is the value of the expression below? 148+(-6)| + |– 35= 7|

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

What is the sum of these mixed numbers 4 2/3+ 3 1/9