PLEASE EXPLAIN HOW TO GET THE ANSWER note: I accidentally clicked the answer, I don't think its right

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Venita is sewing new curtains. the table below shows the relationship between the number of stitches in a row and the length ofthe row.sewingnumber of stitches length (cm)51 131532024306what is the relationship between the number of stitches and the length? othe number of stitches istimes the length.o. the number of stitches is 3 times the length.

[tex]5 \times1 \frac{12}{13} [/tex] me