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Learn how to solve complex equations step by step with helpful tips and practice exercises. Identify like terms, use multiplication, and check your answers. Includes real-world equation modeling examples.
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Algebra S2 Review 3.3-3.4
Solving multi-step equations… • 2x + 5 = 17 • To solve this problem: • 1.) undo the __________. • 2.) undo the multiplication. • 3.) equation solved! • 4.) Check by ___________ answer back into original equation. • TRY IT AND SEE WHAT YOU GET!!
Solve the equations… 3x–8 = 7 4-8t = 36
Solving equations… x – 5 = 10
Solve these Equations… (x + 6) =5
Like Terms…. • Identify the like terms… • + 4 –x -2x + • 3(x + 2) + 4x –
Solving equations with like terms…. Solve: 6x – 12 + 3x = 4x + 6 3x + 2x = ????
Solving Equations using Multiplication / division… 5x - 16 + 2x = 9x - 15
Try this… 5(x + 3) + 2x = 15 + 7x 17x + 15 = 17x + 15 What is this called???? IDENTITY!
BE CAREFUL … 6x - 2(x - 6) = 4x + 5
Write an equation to model the following situation… and Solve! • The temperature was x°F. It rose 17°F and is now 31°F. • A 15 foot pole extends x feet below the ground and 7 feet above the ground.
Write an equation…… • The perimeter of a rectangular garden if 900 ft. The two short sides of the garden are each 20 feet. You are asked to find the length of the two other sides. Write the equation that models the situation.
Homework • 3.3-3.4 Worksheet