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Mathematics 7 Online
OpenStudy (mariebrittany07):

-4(-2x-3)=-9

OpenStudy (chihiroasleaf):

first, use distributive property, a(b+c) = ab + ac can you do it?

OpenStudy (mariebrittany07):

what do you mean

OpenStudy (anonymous):

Distribute the -4 8x + 12 = -9 Subtract the 12 8x = -21 Divide -21 by 8 x = -21/8

OpenStudy (chihiroasleaf):

first, use distributive property on your equation -4(-2x-3)=-9 (-4)(-2x) - (-4) 3 = -9 now, simplify

OpenStudy (mariebrittany07):

can you please show me

OpenStudy (chihiroasleaf):

continue my step above.. :)

OpenStudy (chihiroasleaf):

well..., what do you know about doing algebra? so that I know where to start... :) can you simplify algebraic expresssion?

OpenStudy (mariebrittany07):

NO

OpenStudy (chihiroasleaf):

would you mind to read this tutorial first? http://www.wtamu.edu/academic/anns/mps/math/mathlab/beg_algebra/beg_alg_tut11_simp.htm

OpenStudy (chihiroasleaf):

this one also http://www.purplemath.com/modules/solvelin.htm

OpenStudy (mariebrittany07):

do these cost money

OpenStudy (mariebrittany07):

i think that the last one is only for teachers

OpenStudy (chihiroasleaf):

no.., it's all free... but, it's ok if we read it... :)

OpenStudy (mariebrittany07):

okay ask mom to check out

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