The answer should be A) 3 3/4.
convert 2 3/4 to improper fraction
simplify 2 * 4 to 8
simplify 8 + 3 to 11
convert 3 1/2 to improper fraction
simplify 3 * 2 to 6
simplify 6 + 1 to 7
simplify 11/4 + x + 7/2 to x + 25/4
subtract 25/4 from both sides
simplify 10 - 25/4 to 15/4
x = 15/4 but the choices are mixed fractions so lets simplify 15/4 and we get 3 3/4 since 5/15 = 3.
In decimal form its 3.75.
