Hey there!
5/6b = 8
MULTIPLY 6/5 to BOTH SIDES
5/6b * 6/5 = 8 * 6/5
CANCEL out: 5/6 * 6/5 because it give you 1
KEEP: 8 * 6/5 because it help solve for the b-value
NEW EQUATION: b = 8 * 6/5
b = 8/1 * 6/5
b = 8(6) / 1 (5)
b = 48 / 5
b = 9 3/5
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)