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Q: What is 2x plus 3 equals 9 what does x equal?

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2x + 3 = 9 2x = 6 x = 3

It equals to the equation of a straight line.

3

It equals 8x+12

3.5

No. They are parallel.

x+3(x+1)=2x x + 3x + 3 = 2x 2x + 3 = 0 2x = -3 or x = -1.5

Both equations are equal and so: 3x+1 = 2x+3 3x-2x = 3-1 x = 2 and by substituting y = 7

I believe the converse is: if 2x equals 6 then x equals 3 inverse: if x doesn't equal 3 then 2x doesn't equal 6 contrapositive: if 2x doesn't equal 6 then x doesn't equal 3

-1

4x+9=2x-6 2x=-15 x=-7.5 x equals -7.5.

x = -2 and y = 3

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