4(x+7)=21

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Solution for 4(x+7)=21 equation: 


Simplifying
4(x + 7) = 21

Reorder the terms:
4(7 + x) = 21
(7 * 4 + x * 4) = 21
(28 + 4x) = 21

Solving
28 + 4x = 21

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + 4x = 21 + -28

Combine like terms: 28 + -28 = 0
0 + 4x = 21 + -28
4x = 21 + -28

Combine like terms: 21 + -28 = -7
4x = -7

Divide each side by '4'.
x = -1.75

Simplifying
x = -1.75

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