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Mathematics 7 Online
OpenStudy (anonymous):

3m+4n-4(4m-6n)

OpenStudy (anonymous):

first multiply the -4 through the expression (4m-6n)

OpenStudy (agent0smith):

Use the distributive property first, \[\large 3m+4n-4(4m-6n) =\] \[\large 3m + 4n - 4(4m) - 4 (-6n)\]

OpenStudy (anonymous):

12m+24n

OpenStudy (anonymous):

:/

OpenStudy (anonymous):

no, not quite

OpenStudy (anonymous):

if you are doing (-4)(4m) - 4*(-6n) -16m + 24n you got the 24 right, but the first term should be -16m

OpenStudy (anonymous):

3m+4n-16m+24n Simplify that and you will have the answer

OpenStudy (agent0smith):

don't ignore the negative signs.. \[\large 3m + 4n - 4(4m) - 4 (-6n) = \] \[\large 3m + 4n - 16m + 24n = \] \[\large (3m - 16m) + (4n + 24n) =\]

OpenStudy (anonymous):

-13m+28n

OpenStudy (anonymous):

:/

OpenStudy (anonymous):

is it wrong

OpenStudy (anonymous):

You got it

OpenStudy (anonymous):

thx

OpenStudy (agent0smith):

don't always assume your answers are wrong :P

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