15=8.25+2.25x

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Solution for 15=8.25+2.25x equation:


Simplifying
15 = 8.25 + 2.25x

Solving
15 = 8.25 + 2.25x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2.25x' to each side of the equation.
15 + -2.25x = 8.25 + 2.25x + -2.25x

Combine like terms: 2.25x + -2.25x = 0.00
15 + -2.25x = 8.25 + 0.00
15 + -2.25x = 8.25

Add '-15' to each side of the equation.
15 + -15 + -2.25x = 8.25 + -15

Combine like terms: 15 + -15 = 0
0 + -2.25x = 8.25 + -15
-2.25x = 8.25 + -15

Combine like terms: 8.25 + -15 = -6.75
-2.25x = -6.75

Divide each side by '-2.25'.
x = 3

Simplifying
x = 3

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