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20 February, 03:04

1. Simplify the expression: 2 (5a-4a) + 6a =

2. - 2 (x-9) = 44

+1
Answers (2)
  1. 20 February, 04:20
    0
    1. 8a

    2. - 13

    Step-by-step explanation:

    1. 2 (5a - 4a) + 6a

    = 10a - 8a + 6a

    = 2a + 6a

    = 8a

    2. - 2 (x - 9) = 44

    -2x + 18 = 44

    -2x = 44 - 18

    -2x = 26

    x = 26/-2

    x = - 13
  2. 20 February, 06:52
    0
    1) open the bracket

    10a-8a+6a

    2a+6a

    8a

    2) open the bracket

    -2x+18=44. Remember - * - = +

    Collect like terms

    -2x=44-18

    -2x=26

    Divide both side by - 2

    x=-13
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