How do you solve #3- 9t = 21#?

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Answer 1 · 2016-11-14T21:51:31

#t = -2#

Sovle for #t# while keeping the equation balanced:

#3 - 9t - 3 = 21 - 3#

#3 - 3 -9t = 18#

#0 - 9t = 18#

#-9t = 18#

#(-9t)/-9 = 18/-9#

#((-9)/-9)t = -2#

#1t = -2#

#t = -2#