First part: Bases, Exponents
Second part: x = 14
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The value of x in the equation is 101.75
Variables are letters use to represent numbers in a mathematical equation.
Therefore,
8x - 4 = 810
add 4 to both sides of the equation
8x - 4 + 4 = 810 + 4
8x = 810 + 4
8x = 814
divide both sides by 8
8x / 8 = 814 / 8
x = 101.75
x = 101.75
learn more on equation here: https://brainly.com/question/1632787
