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B-Rad
Lv 4
B-Rad asked in Science & MathematicsMathematics · 1 decade ago

College Algebra word problem?(2)?

Alright, I have a word problem, and I don't know how to set it up or solve it.

The word problem is:

'Find three consecutive integers such that the sum of twice the first and 4 times the second is equal to 20 more than twice the third.

Thanks.

2 Answers

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  • Mona
    1 decade ago

    2x + 4(x+1) = 20 + 2(x+2)

    2x + 4x + 4 = 20 + 2x + 4

    6x = 20 + 2x

    4x = 20

    X = 5

    The answer is 5, 6, 7.

    Source(s): My education.
  • LizardLover
    Lv 6
    1 decade ago

    x

    x+1

    x+2

    ------------

    2x +4[x+1] = 2[x+2]+20

    2x+4x+4=2x+4+20

    6x+4=2x+24

    6x-2x=24-4

    4x=20

    x=5

    x=5

    x+1=6

    x+2=7

    [5,6,7]

    check:

    2[5]+4[6]= 2[7]+20

    10+24=14+20

    34=34 check

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