0.3(7x+21)=2.1(x+3)

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Solution for 0.3(7x+21)=2.1(x+3) equation: 


Simplifying
0.3(7x + 21) = 2.1(x + 3)

Reorder the terms:
0.3(21 + 7x) = 2.1(x + 3)
(21 * 0.3 + 7x * 0.3) = 2.1(x + 3)
(6.3 + 2.1x) = 2.1(x + 3)

Reorder the terms:
6.3 + 2.1x = 2.1(3 + x)
6.3 + 2.1x = (3 * 2.1 + x * 2.1)
6.3 + 2.1x = (6.3 + 2.1x)

Add '-6.3' to each side of the equation.
6.3 + -6.3 + 2.1x = 6.3 + -6.3 + 2.1x

Combine like terms: 6.3 + -6.3 = 0.0
0.0 + 2.1x = 6.3 + -6.3 + 2.1x
2.1x = 6.3 + -6.3 + 2.1x

Combine like terms: 6.3 + -6.3 = 0.0
2.1x = 0.0 + 2.1x
2.1x = 2.1x

Add '-2.1x' to each side of the equation.
2.1x + -2.1x = 2.1x + -2.1x

Combine like terms: 2.1x + -2.1x = 0.0
0.0 = 2.1x + -2.1x

Combine like terms: 2.1x + -2.1x = 0.0
0.0 = 0.0

Solving
0.0 = 0.0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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