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Published byEthelbert Douglas Modified over 9 years ago
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Multi-Step Equations with Rational Numbers How are the problems below similar and different? ANSWER- Both will give you approximately the same answer once you perform your two steps to isolate the variable. But obviously one has fractions, the other decimals.
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COMMON CORE #9B Solve Multi-Step Equations with Rational Numbers(decimals and fractions)
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Multistep Equations with Decimals 0.88y – 5 = 8.2 Remember ADD first! 0.88y – 5 = 8.2 + 5 + 5 0.88y = 13.2 Then divide! 0.88y = 13.2 0.88 0.88 y = 15 Check your answer 0.88(15) – 5 = 8.2 13.2 – 5 = 8.2 8.2 = 8.2
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Multistep Equations with Decimals Check Your Answer -1.5(-1.6) + 2.4 = 4.8 2.4 + 2.4 = 4.8 -1.5p + 2.4 = 4.8 Subtract -1.5p + 2.4 = 4.8 - 2.4 - 2.4 -1.5p = 2.4 Again, divide! -1.5p = 2.4 -1.5 -1.5 p = -1.6
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Your Two to Work and Check! -2.15k – 4.5 = 17.43 ANSWERk = -10.2 8.8j + 12 = 47.2 ANSWERj = 4
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Multistep Equations with 1 Fraction +4 +4 t = 24 You Work This! Answer d = -21
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Multistep Equations with 2 Fractions Multiply thru by the LCM! You Work This! - 148 7x = -160 7
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