Anonymous
Anonymous asked in Science & MathematicsMathematics · 9 years ago

What would you subtract from each side to solve for k?

a) 0 = 14 + k

b) -0.8 = k + 3.3

c) 19 = 19 + k

d) m + k = n

3 Answers

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  • LSP
    Lv 5
    9 years ago
    Favorite Answer

    Goal: To get "k" isolated by itself.

    a.) 0 = 14 + k

    In order to isolate k, we need to subtract 14 from both sides and then solve.

    0 = 14 + k

    0 - 14 = 14 - 14 + k

    -14 = k

    Answer: You need to subtract 14 from both sides.

    b.) -0.8 = k + 3.3

    Same here. We need to subtract 3.3 from both sides so that the 3.3 on the variable side will turn into 0 and will not count.

    -0.8 = k + 3.3

    -0.8 - 3.3 = k + 3.3 - 3.3

    -4.1 = k + 0

    Since the zero does nothing, you can just get rid of it:

    -4.1 = k + 0

    -4.1 = k

    Answer: You need to subtract 3.3 from both sides.

    c.) 19 = 19 + k

    Nothing special. We need to subtract 19 from both sides so that the 19 on the variable side will turn into 0 and will not count.

    19 = 19 + k

    19 - 19 = 19 - 19 + k

    0 = k + 0

    Since the zero does nothing, you can just get rid of it:

    0 = k + 0

    0 = k

    Answer: You need to subtract 19 from both sides

    c.) m + k = n

    Now this might look a bit harder but it's not. They are simply throwing in variables to confuse you. But you subtract m to make k isolated just like we did with the other ones.

    m + k = n

    m - m + k = n - m

    k = n - m

    Answer: You need to subtract m from both sides.

    Source(s): Good Luck!!!
  • 9 years ago

    The main thing is to get K by itself, so subtract or occasionally add whatever is on the equal side with k.

    a) subtract 14 so it would be 0-14 = k

    b) subtract 3.3 so it would be 2.5 = k

    c) subtract 19 so it would be 0= k

    d) subtract n so it would be m - n = k

  • Anonymous
    9 years ago

    a) k = -14

    b) k = -4.1

    c) k = 0

    d) k = n - m

    I hope this helps!

    Source(s): Knowledge
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