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first, what is x?
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22 added to 378 equals 400.
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Heat energy must be added to or subtracted from a substance to cause a phase change.
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first, what is x?
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22 added to 378 equals 400.
The denominator (bottom number) must be the same for all the fractions being added or subtracted together.
The principle that for any change in a stimulus to be detected, a constant proportion of that stimulus (s) must be added or subtracted.
Unlike fractions have denominators that are unequal, and therefore cannot be added or subtracted. If two fractions need to be added or subtracted they must first be converted to like fractions.
If the number, x, has 10 subtracted from twice it to make 28, then x must be 19. 2x - 10 = 28 2x = 38 x = 19