66=-6a-6(2a+1) how do you do this problem?

how do i complete the problem

Comments

  • Distribute: 66= -6a -12a -6

    Combine Like Terms: 66 = -18a -6

    Add 6 to both sides: 72= -18a

    Divide: a = -4

  • 66 = -6a - 6(2a + 1)

    66 = -6a -12a -6

    66 = -18a - 6

    +6 +6

    72 = -18a

    (divide by -18)

    -4 = a

  • distribute six so it looks like 66=-6a-12a+6 then ad a's so it is 66=6a+6 subtract 6 from both sides

    6a=60 divide by six and a=10

  • multiply -6 with (2a+1) : -6(-2a) is -12a and -6(1) is -6

    66=-6a-12a-6

    combine like terms

    66=-18a-6

    add six on both sides to have the variable on one side

    72=-18a

    divide both sides by -18

    -4=a

    the answer is -4

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