Can someone help IM FAILING MATH and would really improve my grade

Negative 5 1/12 + negative 4 1/4 + 6 3/4

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Fred has a spinner that is split into four equal sections: red, blue, green, and yellow. fred spun the spinner 688 times. which of the following would be a good estimate of the number of times the spinner lands on the green section? a. 269 b. 603 c. 344 d. 189