2(2x-5)=21

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Solution for 2(2x-5)=21 equation:


Simplifying
2(2x + -5) = 21

Reorder the terms:
2(-5 + 2x) = 21
(-5 * 2 + 2x * 2) = 21
(-10 + 4x) = 21

Solving
-10 + 4x = 21

Solving for variable 'x'.

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

Add '10' to each side of the equation.
-10 + 10 + 4x = 21 + 10

Combine like terms: -10 + 10 = 0
0 + 4x = 21 + 10
4x = 21 + 10

Combine like terms: 21 + 10 = 31
4x = 31

Divide each side by '4'.
x = 7.75

Simplifying
x = 7.75

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