Q: What is 9y plus 3 equals 5y plus 13?

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(1, -1)

Y=30

-8-5y = 12-9y 9y-5y - 12+8 4y = 20 y = 5

9y

5y - 4 + 9y - 1y + 15= 5y + 9y - 1y + 15 - 4= (5 + 9 - 1)y + (15 - 4)= 13y + 9

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9y+3 = 5y+13 9y-5y = 13-3 4y = 10 y =2.5

(1, -1)

Y=30

-8-5y = 12-9y 9y-5y - 12+8 4y = 20 y = 5

9y

4y + 10 = -18 4y = -28 y = -7

5y - 2 + y + 52 = 6y + 50 - 3y6y + 50 = 9y + 50y = 0

5y - 4 + 9y - 1y + 15= 5y + 9y - 1y + 15 - 4= (5 + 9 - 1)y + (15 - 4)= 13y + 9

5y - 3 = 4 + 9y Subtract 5y from both sides: -3 = 4 + 4y Subtract 4 from both sides: -7 = 4y Divide both sides by 4: -7/4 = y

-4y

-8 - 5y = 12 - 9y -8 + 4y = 12 4y = 20 y = 20/4 or 5

1. 6x - 5y = 22 2. 5x - 9y = -1 1 times 5: 30x - 25y = 110 2 times 6: 30x - 54y = -6 Subtract : 29y = 116, so y = 4 and x therefore = 7