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OpenStudy (anonymous):
What should you multiply the first equation (top equation) by in order to eliminate the variable y when the two equations are added together? 6x -2y=10 3x +4y=8 a.-3 b.-2 c.2 d.3
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OpenStudy (rulnick):
c. 2
OpenStudy (rulnick):
... so that the coeff of y become -4, the opposite of its coeff in the second eqn.
OpenStudy (anonymous):
Thanks so much:)
OpenStudy (rulnick):
welcome.
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