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Mathematics 7 Online
OpenStudy (whereisthefloor):

What is the value of.....

MARC (marc_d):

step 1: combine like terms

MARC (marc_d):

don't forget ur unknowns.. @WHEREISTHEFLOOR

MARC (marc_d):

\[a=2+3a+10\]\[a=3a+12\]

MARC (marc_d):

nope.. next step u should is subtact both sides by 3a

MARC (marc_d):

subtract*

MARC (marc_d):

ur equation would be like this\[a-3a=3a-3a+12\]

MARC (marc_d):

\[-2a=12\]

MARC (marc_d):

almost correct..don't forget the negative sign..

MARC (marc_d):

no..what value u get when u divide 12 with -2 ?\[a=\frac{ 12 }{ -2 }\]\[a=?\]

MARC (marc_d):

yep,that's right!

MARC (marc_d):

Therefore,the value of a is -6

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