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Mathematics 9 Online
OpenStudy (anonymous):

if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation? 2x + y = 8 -x - 3y = -12 a.3y + 12 b. -3y + 12 c.3y - 12 d. -3y - 12

OpenStudy (lgbasallote):

hint: solve for x in the second equation does that help?

OpenStudy (anonymous):

kinda but i still dont understand

OpenStudy (lgbasallote):

-x - 3y = -12 solve for x

hartnn (hartnn):

first,add x to both sides then add 12 to both sides.

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