0.7(x+9)=21

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Solution for 0.7(x+9)=21 equation: 


Simplifying
0.7(x + 9) = 21

Reorder the terms:
0.7(9 + x) = 21
(9 * 0.7 + x * 0.7) = 21
(6.3 + 0.7x) = 21

Solving
6.3 + 0.7x = 21

Solving for variable 'x'.

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

Add '-6.3' to each side of the equation.
6.3 + -6.3 + 0.7x = 21 + -6.3

Combine like terms: 6.3 + -6.3 = 0.0
0.0 + 0.7x = 21 + -6.3
0.7x = 21 + -6.3

Combine like terms: 21 + -6.3 = 14.7
0.7x = 14.7

Divide each side by '0.7'.
x = 21

Simplifying
x = 21

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