Question

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

Answer 1

given

$20 \times \frac{1}{2} + \: - 50 \times \frac{3}{4}$

negative × positive = negative

therefore the equation is written as

$20 \times \frac{1}{2} - 50 \times \frac{3}{4}$

20÷2 =10

50÷4 = 25/2

now the general equation is

$10 - \frac{25 \times 3}{4}$

$= 10 - \frac{75}{4}$

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

$= 4 \times 10 - 4 \times \frac{75}{4}$

$= 40 - 75$

$= - 35$

as our final answer.

Answer 2

-30 1/4

Hope it helps, if you need the explanation how i did this comment :)