nadnad10
(x+y = 4) - (x-y = 2) = (2y = 2) = (y=1) ||| (x+y = 4) = (x+1=4) = (x=4-1) = (x=3) ||| jadi x = 3 dan y = 1
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mellypradani91
X + y = 4 ......(1) x - y = 2 ......(2) _________ _ 2y = 2 y = 2/2 = 1 y =1 ke persamaan 1 x + y = 4 x + 1 = 4 x = 4-1 = 3 jd, penyelesaiannya adl X = 3 dan Y = 1
x - y = 2 ......(2)
_________ _
2y = 2
y = 2/2 = 1
y =1 ke persamaan 1
x + y = 4
x + 1 = 4
x = 4-1 = 3
jd, penyelesaiannya adl
X = 3 dan Y = 1