SOLUTION: {{{(5y-4x)/3=7}}} then x=?
A. {{{(7-5y)/12}}} B.{{{(21-5y)/4}}} C. {{{(21-15y)/4}}} D.{{{(5y-21)/4}}} E. {{{21/5y}}}
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Question 881699: then x=?
A. B. C. D. E.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Number Properties! Undo everything which was done to x. This means using inverses - multiplicative and additive inverses.
REASONS FOR POSSIBLE SEQUENCE OF STEPS:
(q) Multiplicative Inverse of ;
(q) Additive Inverse of ;
(q) Multiplicative Inverse of .
(q) Finish any simplifications.
DONE.
CHOICE D.
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