les3.8 vocabulary two-step equation let's try...

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March 14, 2016 Two-step Equation An equation with two different operations. Good to Know! In order to get the variable by itself you must perform TWO inverse operations. When solving a two-step equation, first you must balance the equation by undoing any ADDITION or SUBTRACTION. You can finish solving the equation by undoing any MULTIPLICATION or DIVISION. It is done in this order because it is undoing the order of operations. Vocabulary Les 3.8 Let's Try it! Solve the equation. 7x − 3 = 74 Solve the equation. x 9 + 5 = 7 Solve the equation. 3x + 1 = 19 Write an equation for the statement. Solve the problem and check the solution. Three times a number x increased by 8 is 29. Find the number x . Write an algebraic equation for the sentence. Solve the equation. Twice a number x minus 7 is 5. Find the number x.

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March 14, 2016

Two-step EquationAn equation with two different operations.

Good to Know!In order to get the variable by itself you must perform TWO inverse operations.

When solving a two-step equation, first you must balance the equation by undoing any ADDITION or SUBTRACTION.

You can finish solving the equation by undoing any MULTIPLICATION or DIVISION. It is done in this order because it is undoing the order of operations.

VocabularyLes 3.8

Let's Try it!

Solve the equation.

7x − 3 = 74

Solve the equation.

x9 + 5 = 7

Solve the equation.

3x + 1 = 19

Write an equation for the statement. Solve the problem and check the solution.

Three times a number x increased by 8 is 29. Find the number x .

Write an algebraic equation for the sentence. Solve the equation.

Twice a number x minus 7 is 5. Find the number x.
March 14, 2016

John and Erin shared a bag of Skittles candies. John ate five fewer than three times as many candies as Erin ate. If John ate 43 candies, how many candies did Erin eat?

Write an algebraic equation for the sentence. Solve the equation.

Communication Prompt

What do you think are the most common mistakes students make when solving equations? Why do you think that?

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