Solve all three and show work for brainliest answer

1.
solve the equation for b.
5a + 6b =2

2.
solve the equation for r.
1 = prt

3. solve the equation for x.
ax+by=c

1.

5*a + 6*b =2

6*b = 2 - 5"a

b = (2-5*a)/6

2.

1 = p*r*t

r = 1/(p*t)

3.

A*x+B*y=C

A*x = C-B*y

x = (C-B*y)/A

giovanni battista pergolesi, italian baroque composer who wrote one of the most famous settings of the stabat mater. don lorenzo perosi, catholic priest and director of the sistine choir under five popes.