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3.1: Solving Equations using more than one operation When solving equations with more than one operation... where do you start???? You follow the order of operations... BACKWARDS... that's right... SADMEP So you the order you solve is... Your ULTIMATE GOAL is... _________________ Let's look at an example... 26 = 4n + 46 - 46 - 46 -20 = 4n ÷4 ÷4 -5 = n Always check your answer!!! subtract 46 from each side simplify divide each side by 4 simplify CHECK: 26 = 4 (-5) + 46 26 = -20 + 46 26 = 26 ✓ this equation has 2 operations... · mulitplication · addition which one do we do first??? substitute -5 for n 3r - 8 = -32 m - 9 = 11 8p - 3 = 13 a. 7 = 2y - 3 b. _x_ 9 - 15 = 12 c. - x + 15 = 12 7 = 2( ) - 3 ( 9 -( ) - 15 = 12 ) + 15 = 12 3.1 Quick Check Grade: 8 Subject: Algebra 1 1 Solve 7x + 4 = 39 2 Solve x 7=2+5 3 Solve 34 = 8 - 2t 4 Solve y - 6 = - 57 3 5 Solve n 7=3-3 p122:1-43odd p122:1-43even, 47 - 54 even
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