16. [tex]A = \frac{1}{2} bh[/tex]
Multiple 2 on both sides to get rid of the 1/2
2A = bh
Divide "h" on both sides to get "b" by itself
[tex]\frac{2A}{h} = b[/tex]
19. PV = nRT
Divide "nR" on both sides to get "T" by itself, or you can divide each variable one at a time
[tex]\frac{PV}{n} = RT[/tex]
[tex]\frac{PV}{nR} = T[/tex]
22. PV = nRT
Divide "nT" on both sides to get "R" by itself, or you can divide each variable one at a time
[tex]\frac{PV}{nT} = R[/tex]
25. ax + r = 7
Subtract "ax" on both sides to get "r" by itself
r = 7 - ax
28. y = 3x + 3b
Subtract 3x on both sides
y - 3x = 3b
Divide 3 on both sides to get "b" by itself
[tex]\frac{y}{3} - x = b[/tex] or [tex]\frac{1} {3} y - x = b[/tex]
