4(x+4)=21

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Solution for 4(x+4)=21 equation: 


Simplifying
4(x + 4) = 21

Reorder the terms:
4(4 + x) = 21
(4 * 4 + x * 4) = 21
(16 + 4x) = 21

Solving
16 + 4x = 21

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + 4x = 21 + -16

Combine like terms: 16 + -16 = 0
0 + 4x = 21 + -16
4x = 21 + -16

Combine like terms: 21 + -16 = 5
4x = 5

Divide each side by '4'.
x = 1.25

Simplifying
x = 1.25

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