Examlex
The value of c is 4 given the formula 21c - 15 = 18 - 12c.
Positive And Negative
Terms used to describe the presence or absence of a condition or property, often used in scientific and medical testing.
Oculars
Refers to the eyepieces on optical devices, such as microscopes and telescopes, that magnify images for viewing.
Magnifying Lens
An optical device used to make small objects appear larger by focusing light through a convex lens.
Eyepieces
Optical elements of a microscope or telescope that the viewer looks into to magnify and examine the image of an object.
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