2x+(3+9)=15

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Solution for 2x+(3+9)=15 equation:


Simplifying
2x + (3 + 9) = 15

Combine like terms: 3 + 9 = 12
2x + (12) = 15
2x + 12 = 15

Reorder the terms:
12 + 2x = 15

Solving
12 + 2x = 15

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 2x = 15 + -12

Combine like terms: 12 + -12 = 0
0 + 2x = 15 + -12
2x = 15 + -12

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

Divide each side by '2'.
x = 1.5

Simplifying
x = 1.5

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