8.2=15-(2x+3)

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Solution for 8.2=15-(2x+3) equation:


Simplifying
8.2 = 15 + -1(2x + 3)

Reorder the terms:
8.2 = 15 + -1(3 + 2x)
8.2 = 15 + (3 * -1 + 2x * -1)
8.2 = 15 + (-3 + -2x)

Combine like terms: 15 + -3 = 12
8.2 = 12 + -2x

Solving
8.2 = 12 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
8.2 + 2x = 12 + -2x + 2x

Combine like terms: -2x + 2x = 0
8.2 + 2x = 12 + 0
8.2 + 2x = 12

Add '-8.2' to each side of the equation.
8.2 + -8.2 + 2x = 12 + -8.2

Combine like terms: 8.2 + -8.2 = 0.0
0.0 + 2x = 12 + -8.2
2x = 12 + -8.2

Combine like terms: 12 + -8.2 = 3.8
2x = 3.8

Divide each side by '2'.
x = 1.9

Simplifying
x = 1.9

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