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OpenStudy (anonymous):
Help! For what value of x is (x,-3) a solution for 4x-3y=21 A) -3 B) -11 C) 3
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OpenStudy (anonymous):
you simply solve for x in that equation
OpenStudy (anonymous):
you plug in y which is -3 into 4x-3(-3)=21 4x-(-9)=21 subtract 9 from both sides 4x=12 divid 4 by 12 x=3 the answer is c
OpenStudy (anonymous):
Thankyou!
OpenStudy (anonymous):
your welcome
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