How do you subtract #\frac { 3} { 10} - ( - \frac { 7} { 3} )#?

1 Answer
MeneerNask
Feb 8, 2017

Since there are 2 #-# signs, they cancel out: #=3/10+7/3#

Explanation:

We now get the same denominator, by multiplying both fractions with a 'disguised' #1#:

#=3/10xx3/3+7/3xx10/10=(3xx3)/(10xx3)+(7xx10)/(3xx10)#

#=9/30+70/30=79/30=2 19/30#

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