18 students are surveyed about the clothes they are wearing. 6 students aren't wearing jeans or a t-shirt. 3 students are wearing jeans and a t-shirt. 4 students are wearing jeans but not a t-shirt. how many students are wearing a t-shirt but not jeans?
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crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.

1.3x - 2 - (3.3x + 5) = 2x + 1

1.3x - 2 - 3.3x - 5 = 2x + 1

-2x - 7 = 2x + 1

-7 = 4x + 1

-8 = 4x

x = -2