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12 March, 00:16

What is the solution to this equation?

-5 (s - 30) = - 10

A. s = - 4

B. s = 8

C. s = 28

D. s = 32

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Answers (2)
  1. 12 March, 00:35
    0
    s = 32

    Step-by-step explanation:

    -5 (s - 30) = - 10

    Divide each side by - 5

    -5 / - 5 (s - 30) = - 10/-5

    s - 30 = 2

    Add 30 to each side

    s-30+30 = 2+30

    s = 32
  2. 12 March, 00:37
    0
    D. s=32

    Step-by-step explanation:

    To solve the equation, we want to find out what s is. In order to do this, we have to get s by itself. Perform the opposite of what is being done to the equation. Keep in mind, everything done to one side, has to be done to the other.

    -5 (s - 30) = - 10

    s-30 is being multiplied by - 5. The opposite of multiplication is division. Divide both sides by - 5.

    -5 (s - 30) / -5 = - 10/-5

    s-30=-10/-5

    s-30=2

    30 is being subtracted from s. The opposite of subtraction is addition. Add 30 to both sides.

    s-30+30=2+30

    s=2+30

    s=32

    Let's check our solution. Substitute 32 in for s in the original equation. If our solution is correct, the left side of the equation should match the right side.

    -5 (s - 30) = - 10

    -5 (32-30) = -10

    -5 (2) = - 10

    -10=-10

    The statement above is true, so we know that s is equal to 32, and D is the correct answer.
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