6.3+2.1x=-8.7

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Solution for 6.3+2.1x=-8.7 equation: 


Simplifying
6.3 + 2.1x = -8.7

Solving
6.3 + 2.1x = -8.7

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 + 2.1x = -8.7 + -6.3

Combine like terms: 6.3 + -6.3 = 0.0
0.0 + 2.1x = -8.7 + -6.3
2.1x = -8.7 + -6.3

Combine like terms: -8.7 + -6.3 = -15
2.1x = -15

Divide each side by '2.1'.
x = -7.142857143

Simplifying
x = -7.142857143

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