eplascencia428 eplascencia428

26-10-2020
Mathematics

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11x + 3y = 24
x - 3y = 12

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HeepNguyen HeepNguyen

26-10-2020

11x+3y=24
x-3y=12

x=12+3y

11(12+3y)+3y=24
132+33y+3y=24
132+36y=24
36y=-108
y=-3

x-3y=12
x-3(-3)=12
x+9=12
x=3

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