Solving Two-Step Equations #34. Example 1 Solve each equation.   18 + 3x = 30.

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Presentation transcript:

Solving Two-Step Equations #34

Example 1 Solve each equation.   x = 30

FYI Undo operations in the reverse of the Order of Operations. First undo addition or subtraction. Then undo multiplication or division. Helpful Hint

Example 2   Solve. Check the answer. – 2 = 1 x3x3

Example 3 Solve. Check the answer. = 6 x

Example 4 Solve each equation. x – 16 = 9 3

Example 5 Solve. Check the answer. = 49 x

Example 6 The rule for a certain function is to multiply the input by 5 and subtract 4. Find the input value when the output is 11.

Real-world Application 1   Kaia earned $425 last week. She wants to put $350 in the bank and buy some DVDs. Each DVD costs $25. Write a two-step equation to represent the situation. Then solve the equation. How many DVDs can she buy?

Real-world Application 2 Nancy saved $87 of the money she made babysitting. She wants to buy CDs that cost $15 each, along with a set of headphones that costs $12. How many CDs can she buy?