20 1/2 + -50 3/4 me im bad at math

given

negative × positive = negative

therefore the equation is written as

20÷2 =10

50÷4 = 25/2

now the general equation is

now we find the L.C.M by multiplying the denominators which is 4×1 = 4 as the L. C. M,

now multiply through by the L . C .M which is 4

as our final answer.