Question

3(u-v) = 13+v.
(u-v) -4 = 22-3u.
by elimination method​

Answer 1

Step-by-step explanation:

3(u-v) = 13+v => 3u-3v=13+v=> 3u-4v = 13-----(1)

(u-v)-4 = 22-3u => -u+4v = 22------(2)

adding 1 and 2

3u-4v = 13

-u+4v = 22

-----------------

2u +0 = 35

u = 35/2

substitute value of u in (1)

105/2 - 4v = 13

-4v = 13+105/2

v = -163.7