7(3+x)=28

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Solution for 7(3+x)=28 equation: 


Simplifying
7(3 + x) = 28
(3 * 7 + x * 7) = 28
(21 + 7x) = 28

Solving
21 + 7x = 28

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 7x = 28 + -21

Combine like terms: 21 + -21 = 0
0 + 7x = 28 + -21
7x = 28 + -21

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

Divide each side by '7'.
x = 1

Simplifying
x = 1

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