3.5(x+4)=21

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Solution for 3.5(x+4)=21 equation:


Simplifying
3.5(x + 4) = 21

Reorder the terms:
3.5(4 + x) = 21
(4 * 3.5 + x * 3.5) = 21
(14 + 3.5x) = 21

Solving
14 + 3.5x = 21

Solving for variable 'x'.

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

Add '-14' to each side of the equation.
14 + -14 + 3.5x = 21 + -14

Combine like terms: 14 + -14 = 0
0 + 3.5x = 21 + -14
3.5x = 21 + -14

Combine like terms: 21 + -14 = 7
3.5x = 7

Divide each side by '3.5'.
x = 2

Simplifying
x = 2

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