5x+15+2x+8=3

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Solution for 5x+15+2x+8=3 equation:


Simplifying
5x + 15 + 2x + 8 = 3

Reorder the terms:
15 + 8 + 5x + 2x = 3

Combine like terms: 15 + 8 = 23
23 + 5x + 2x = 3

Combine like terms: 5x + 2x = 7x
23 + 7x = 3

Solving
23 + 7x = 3

Solving for variable 'x'.

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

Add '-23' to each side of the equation.
23 + -23 + 7x = 3 + -23

Combine like terms: 23 + -23 = 0
0 + 7x = 3 + -23
7x = 3 + -23

Combine like terms: 3 + -23 = -20
7x = -20

Divide each side by '7'.
x = -2.857142857

Simplifying
x = -2.857142857

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