21=.5(4x+6)

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Solution for 21=.5(4x+6) equation:


Simplifying
21 = 0.5(4x + 6)

Reorder the terms:
21 = 0.5(6 + 4x)
21 = (6 * 0.5 + 4x * 0.5)
21 = (3 + 2x)

Solving
21 = 3 + 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.
21 + -2x = 3 + 2x + -2x

Combine like terms: 2x + -2x = 0
21 + -2x = 3 + 0
21 + -2x = 3

Add '-21' to each side of the equation.
21 + -21 + -2x = 3 + -21

Combine like terms: 21 + -21 = 0
0 + -2x = 3 + -21
-2x = 3 + -21

Combine like terms: 3 + -21 = -18
-2x = -18

Divide each side by '-2'.
x = 9

Simplifying
x = 9

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