Solve by cross multiplication method:-
u + v = 27 and 2/3v = 19 - 3/4u
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Answer:
u + v = 27-(1)
2/3v =19-3/4u :- 3/4u + 2/3v =19
a1=1 b1=1 c1=27
a2=3/4 b2=2/3 c2=19
[x = b1c2 - b2c1 / a1b2 - a2b1]
u= 1*19 - 2/3*27 / 1*2/3 - 3/4*1
u = 19-18/ 2/3-3/4
u = 1/8-9/12
u = 12/-1
u = -12 -(3)
substituting (3) in (1)
-12+ v= 27
v = 27+12
v = 39
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