Scientific notation: 8.1x10^-5
X=12
-5+17=12 - this is the quickest way to solve an easy equation like this
12+4x=5x
x=12
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Lets write as an equation:
x/4 + 18 = x
to get rid of fraction lets multiply the whole equation by 4:
x + 4*18 = 4x
x + 72 = 4x
3x = 72
x = 72/3
x = 24
that is the solution
So for A Write all numerators above the least common denominator Add the numbers
7
-
12
