Question

Find x and y if 3x + 3y =9 and 3x - 2y = 4​

Answer 1

x= 2 y= 4

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Answer 2

Answer:

x = -2 , y = 5

Step-by-step explanation:

3x + 3y = 9.......(1)

3x - 2y = 4........(2)

Subtracting equation (2) from (1)

3x + 3y = 9......(1)

--- 3x + 2y = 4......(2)

(-) (-) (-)

_________________

0 + 1y = 5

y = 5

Substituing y = 5 in equation (1)

3x + 3y = 9......(1)

3x + 3(5) = 9

3x + 15 = 9

3x = 9 - 15

3x = -6

x = -6

3

× = -2

Therefore, x = -2 , y = 5 is the solution of the given equation

Hope this helps