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23 December, 23:05

Solve for s: 7s + 4 (3-5) = 18

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Answers (2)
  1. 23 December, 23:10
    0
    7s + 4 (3-5) = 18

    Multiply the bracket by 4

    (4) (3) = 12

    (4) (-5) = -20

    7s+12-20=18

    7s-8=18

    Move - 8 to the other side.

    Sign changes from - 8 to + 8

    7s-8+8=18+8

    7s=18=8

    7s=26

    Divide both sides by 7

    7s/7=26/7

    Answer: s=26/7 or s=3 5/7
  2. 23 December, 23:32
    0
    7s+4 (3-5) = 18

    7s+12-20=18

    7s=18-12+20

    7s=26

    s=3.714
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