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30 October, 18:09

If you have a total 42 math and science world problem and math have 10 more word problem then science. how many does each subject have

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  1. 30 October, 20:18
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    26 math problems

    16 science problems

    Step-by-step explanation:

    Set up equations that represent the problem:

    m = # of math problems

    s = # of science problems

    42 = m + s

    m = 10 + s

    Let's make the first equation equal to m:

    42 = m + s

    Subtract s on both sides:

    42 = m + s

    -s - s

    42 - s = m

    We have our two equations:

    42 - s = m

    m = 10 + s

    Set them equal to each other:

    42 - s = m

    m = 10 + s

    42 - s = 10 + s

    Add s on both sides:

    42 - s = 10 + s

    +s + s

    42 = 10 + 2s

    Subtract 10 on both sides:

    42 = 10 + 2s

    -10 - 10

    32 = 2s

    Divide by 2 on both sides:

    32 = 2s

    /2 / 2

    16 = s

    Therefore, the number of science problems is 16.

    Let's substitute this value into one of the equations to find the number of math questions.

    Use this equation:

    42 = m + s

    Substitute:

    42 = m + s

    42 = m + 16

    Subtract 16 on both sides:

    42 = m + 16

    -16 - 16

    26 = m

    Therefore, you have 26 math problems.
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