How do you solve #2= \frac { n } { 2} - 3#?

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Answer 1 · 2018-04-20T04:34:53

#n=10#

Order of operations is a little backwards when solving an equation that has two sides, so:

#2=n/2 -3#

#2 color(blue)(+3)=n/2 cancel(-3)color(blue)(cancel(+3))# #color(blue)(" | Add 3 to both sides to get rid of the "-3)#

#5=n/2#

#5 color(blue)(*2)=n/cancel(2) color(blue)(cancel(*2))# #color(blue)("| Multiplying both sides by " 2 " cancels fraction")#

#n=10#

Let's double check:

#2=10/2 - 3#

#2=5-3# #color(blue)(" | "10/2=5)#

#2=2# #color(blue)(" | "5-3=2 " True")#