3x+.5(10x-6)=21

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Solution for 3x+.5(10x-6)=21 equation:


Simplifying
3x + 0.5(10x + -6) = 21

Reorder the terms:
3x + 0.5(-6 + 10x) = 21
3x + (-6 * 0.5 + 10x * 0.5) = 21
3x + (-3 + 5x) = 21

Reorder the terms:
-3 + 3x + 5x = 21

Combine like terms: 3x + 5x = 8x
-3 + 8x = 21

Solving
-3 + 8x = 21

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 8x = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 8x = 21 + 3
8x = 21 + 3

Combine like terms: 21 + 3 = 24
8x = 24

Divide each side by '8'.
x = 3

Simplifying
x = 3

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