makaioambrose
makaioambrose
21-06-2018
Mathematics
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Help Math Analysis !!!!
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choixongdong
choixongdong
21-06-2018
3x + 4y = 17 (1)
-4x - 3y = -18 (2)
multiply equation (1) by 4 and equation (2) by 3 to eliminate x
(× 4) 12x + 16y = 68 (1)
(× 3) -12x - 9y = -54 (2)
---------------------------------------------Add
7y = 14
y = 2
Replace y = 2 into equation (1) 3x + 4y = 17 to find x
3x + 4(2)= 17
3x + 8 = 17
3x = 9
x = 3
Anwser:
(3,2)
Hope it helps
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