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Ksju [112]
3 years ago
9

Solve the system of equation?2x - 4y = 107x - y = 12​

Mathematics
1 answer:
allsm [11]3 years ago
5 0

Answer:

x = 1.153846153846154

y = -1.923076923076923

Step-by-step explanation:

Multiply 7x - y = 12 by -4 and then add it to 2x - 4y = 10

       2x - 4y = 10

+(-4( 7x - y = 12))

     -26x = -30

     \frac{-26x}{-26} = \frac{-30}{-26}

    x = 1.153846153846154

Then plug in x to get y.

  2(1.153846153846154) - 4y = 10

      2.307692307692308 - 4y = 10

     -2.307692307692308          -2.307692307692308

                 -4y = 7.692307692307692

                 \frac{-4y}{-4} = \frac{7.692307692307692}{-4}

                 y = -1.923076923076923

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Simon says "five time my age 4 years ago is the same as three time my age in 2 years" how old is simon
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3 years ago
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Fiesta28 [93]

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Round 258,177 to the nearest hundred thousands
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