If 7x - 4y = 23 and x + y = 8, what is the value of x?

Yuri, sam and dani had the same math homework last night, but none of them finished it. yuri finished 3/8 of her homework, sam finished 4/6 of her homework and dani finished 1/2. who finished the most math homework? who finished the least amount?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Louis wants to carpet the rectangular floor of his basement. the basement has an area of 864 square feet. the width of the basement is 2/3 it's length. what is the length of louis's basement