3+2(x-4)=21

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Solution for 3+2(x-4)=21 equation:


Simplifying
3 + 2(x + -4) = 21

Reorder the terms:
3 + 2(-4 + x) = 21
3 + (-4 * 2 + x * 2) = 21
3 + (-8 + 2x) = 21

Combine like terms: 3 + -8 = -5
-5 + 2x = 21

Solving
-5 + 2x = 21

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 2x = 21 + 5

Combine like terms: -5 + 5 = 0
0 + 2x = 21 + 5
2x = 21 + 5

Combine like terms: 21 + 5 = 26
2x = 26

Divide each side by '2'.
x = 13

Simplifying
x = 13

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