Please help me out and make sure to show your work!

5/6+7/8what is the answer sealsdbdbshd

Three times the sum of a number and seven is negative thirty-six. what is the number?

Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato