15x+30y=10;12x+15y=10
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Step-by-step explanation:
15x+30y=10
24x+30y=20. (2equn multiplying 2)
Subtract
(24-15)x =20-10
9x=10=
X=10/9
y=-10/45
12*10/9+15y=10
40+45y=30
y=-10/45
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