Answer:
5
Step-by-step explanation:
Ok so you can take this as a substitution problem.
x=-2y-13
then substitute
12(-2y-13)+5y=-4
--24y-13×12+5y=-4
sorry i gotta go
They can help you find a common denominator by the bottoms of each fraction if the top ones don't have the same denominator.
M is 24
And measure is SVT is 18.5 degrees