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30 August, 08:01

How do you simplify:

10 (2.1q-2) + (7.5q+18)

(-6y-2) + 5 (3+2.5y)

1/2 (6x-10) + 1/3 (6+9x)

(3x+8) - 6 (2.5x-3)

(7-3t) - 5 (-1.6t+5)

1/2 (12w+8) - 1/5 (10w-5)

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Answers (1)
  1. 30 August, 08:27
    0
    So 10.

    first parenthasees ()

    so 10 (2.1q-2) = 21q-10

    then you do the rest

    21q-20+7.5+18

    add like terms

    28.5q-2

    second

    (-6y-2) + 5 (3+2.5y)

    distribute the 5

    15+12.5y

    add like terms

    -6y-2+15+12.5y

    6.5y+13

    3rd

    1/2 (6x+10) + 1/3 (6+9x)

    distribute

    3x+5+2+3x

    add like terms

    6x+7

    4th

    (3x+8) - 6 (2.5x-3)

    distrubute

    -15x+18

    add like terms

    3x+8-15x+18

    -12x+26

    5th

    (7-3t) - 5 (-1.6t+5)

    distribute

    +8t-25

    add like terms

    7-3t+8t-25

    5t-18

    6th

    1/2 (12w+8) - 1/5 (10w-5)

    distribute

    6w+4-2w+1

    add like terms

    4w+5
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