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Verified answer
3x + 2y = 17 |×22x + 3y = 8 |×3
maka
6x + 4y = 34
6x + 9y = 24
-------------------(-)
- 5y = 10
y = - 2
subtitusi
2x + 3y = 8
2x + 3(-2) = 8
2x - 6 = 8
2x = 8 + 6
2x = 14
x = 7
m = x = 7
n = y = - 2
nilai m + n
= 7 + ( - 2)
= 5 ( A )
3x+2y=17 |×2|
2x+3y=8. |×3|
6x+4y=34
6x+9y=24
-------------- -
-5y= 10
y= 10/-5
y= -2
subs ke
2x+3y=8
2x+3(-2)=8
2x-6=8
2x=6+8
2x=14
x=14/2
x=7
nilai m sama dgn x = 7
nilai n sama dgn y= -2
m+n= 7+(-2)= A. 5
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