4(2x-3)=x+21

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


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

Reorder the terms:
4(-3 + 2x) = x + 21
(-3 * 4 + 2x * 4) = x + 21
(-12 + 8x) = x + 21

Reorder the terms:
-12 + 8x = 21 + x

Solving
-12 + 8x = 21 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-12 + 8x + -1x = 21 + x + -1x

Combine like terms: 8x + -1x = 7x
-12 + 7x = 21 + x + -1x

Combine like terms: x + -1x = 0
-12 + 7x = 21 + 0
-12 + 7x = 21

Add '12' to each side of the equation.
-12 + 12 + 7x = 21 + 12

Combine like terms: -12 + 12 = 0
0 + 7x = 21 + 12
7x = 21 + 12

Combine like terms: 21 + 12 = 33
7x = 33

Divide each side by '7'.
x = 4.714285714

Simplifying
x = 4.714285714

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