5,214 divided by 39 what would the answear be in long division

Need ! easy 6th grade work! i will put as much points as i can! you so much! i’m learning this in math and it’s soo

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β