7(4+3x)=280

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Solution for 7(4+3x)=280 equation: 


Simplifying
7(4 + 3x) = 280
(4 * 7 + 3x * 7) = 280
(28 + 21x) = 280

Solving
28 + 21x = 280

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 + 21x = 280 + -28

Combine like terms: 28 + -28 = 0
0 + 21x = 280 + -28
21x = 280 + -28

Combine like terms: 280 + -28 = 252
21x = 252

Divide each side by '21'.
x = 12

Simplifying
x = 12

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