solve using cross multiplication 4x+3y=17. 3x-4y= -6
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Step-by-step explanation:
the first equation is 3x-4y=15
the second equation is 2x - 2y =18
(1) x 2 = 6x - 8y =30
(2) x 3 = 6x - 6y = 54
(-)
-----------------------
- 2y = -24
y =12
now sub y in (1)
= 3x - 4 x 12 =15
= 3x - 36 = 15
= 3x = 51
= x = 17
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