How do you solve \frac { w } { 3} + \frac { 2} { 5} = \frac { 1} { 15}?
1 Answer
Nov 19, 2016
Explanation:
You need to find the (lowest) common denominator and since
15\cdot \frac { w } { 3} +15\cdot \frac { 2} { 5} =15\cdot \frac { 1} { 15}
5w+3 \cdot 2=1
5w+6=1
5w=1-6
5w=-5
w=-1