How do I solve for y in 21-2y=24?

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Answer 1 · 2018-03-21T21:41:48

#y= - 1.5#

First, you isolate the variable by transferring the integer

#-2y=24-21#

Then you simplify the R.S.

#-2y=3#

Finally, you divide both sides by #-2# to get your answer

#(-2y)/-2 = 3/-2#

#y= -3/2#