8+4x+3=21

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Solution for 8+4x+3=21 equation:


Simplifying
8 + 4x + 3 = 21

Reorder the terms:
8 + 3 + 4x = 21

Combine like terms: 8 + 3 = 11
11 + 4x = 21

Solving
11 + 4x = 21

Solving for variable 'x'.

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

Add '-11' to each side of the equation.
11 + -11 + 4x = 21 + -11

Combine like terms: 11 + -11 = 0
0 + 4x = 21 + -11
4x = 21 + -11

Combine like terms: 21 + -11 = 10
4x = 10

Divide each side by '4'.
x = 2.5

Simplifying
x = 2.5

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