Find four consecutive even integers such that if the sum of the first and third was multiplied by 2, the result is 20 less than three times

Question

Find four consecutive even integers such that if the sum of the first and third was multiplied by 2, the result is 20 less than three times the fourth.

in progress 0
Thiên Hương 7 months 2021-07-28T03:04:06+00:00 1 Answers 6 views 0

Answers ( )

  1. Eirian
    0
    2021-07-28T03:06:02+00:00
    Reply

    xAnswer:

    -10   -8   -6   -4

    Step-by-step explanation:

    The numbers are  

    first =x

    second= x+2

    third=x+4

    4th= x+6

    2(x + (x+4)) = 3(x+6)-20

    4x+8 = 3x+18–20

    4x-3x=18–20–8

    x=-10

    So the numbers are       -10,           -8,              -6,            -4

                                           first           2nd          3rd             4th

               Check:

             2( -10-6)  = 3(-4) -20

                2(-16) =  -12-20

    -32 = -32

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )