How do you solve #-\frac { 2} { 7} u - \frac { 5} { 3} = - \frac { 5} { 2}#?

1 Answer
sankarankalyanam
Mar 15, 2018

#color(red)(u = 35/12 = 2(11/12)#

Explanation:

#-(2/7)u - 5/3 = - 5/2#

#(6u + 35) / 21 = 5/2# (Taking L CM on L H S, multiplying by (-) sign both sides.)

#2 * (6u + 35) = 5 * 21# (cross multiplying.)

#12u + 70 = 105# (Removing bracket.)

#12u = 105 - 70 = 35#

#color(red)(u = 35 / 12 = 2(11/12)#

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