8.1 pt 2 Equations (Mult./Div.) Objective: Students will be able to solve equations using multiplication and division.

Definitions Division Prop. of Equality: divide each side by number (not zero) Ex: 2x = 18 Multiplication Prop. of Equality: multiply each side by reciprocal (not zero) Y / 2 = 13

Solve equations with division 11x = 33 -6x = 36 -39 = 13v 42 = -21a 3x = 33

Student Division 3x = 60 -15y = 60 4y = 48 -9v = 63 25x = -50 12w = -120

Solve with Multiplication -7 = b/8 x/7 = 6 y/3 = 10 y/-3 = 5 11 = p/6 -9 = y/20

Solve by Multiplication x/7 = 5 Y/-9 = 8 p/3 = 6 a/10 = -7 c/-2 = 90 m/-30 = 3

Fractions 5/7t = 10 7r = -7/8

Word Problem Problem: If a dog digs a hole in the ground at 15 ft/min, how long will it take to dig a 90ft. Hole? Know: 15 ft./min digs 90ft. Hole

Student word problem Problem: If a fire destroys 50 acres then a foundation plants 300 seeds per/acre to replace them, how many total seeds were planted? Know: 50 acres destroyed, planted 300 seeds per acre.

Wrap-up Questions / Comments Ic/Hw: workbook pg. 45