Jawapan

2016-08-12T23:02:08+08:00

1/2v + 2w = 1
1/2v = 1 - 2w
v = 2(1 - 2w)
v = 2 - 4w
v + 4w = 2

( v + 4w = 2 ) x 2
2v + 8w = 4

Kaedah Penghapusan
2v - 3w = -7
(-) 2v + 8w = 4
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-11w = -11
11w = 11
w = 1 <<<<<
---------------------

v = 2 - 4w
v = 2 - 4(1)
v = -2 <<<<<

Fahamikan