-4.2x+3.15=-6.51

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Solution for -4.2x+3.15=-6.51 equation: 


Simplifying
-4.2x + 3.15 = -6.51

Reorder the terms:
3.15 + -4.2x = -6.51

Solving
3.15 + -4.2x = -6.51

Solving for variable 'x'.

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

Add '-3.15' to each side of the equation.
3.15 + -3.15 + -4.2x = -6.51 + -3.15

Combine like terms: 3.15 + -3.15 = 0.00
0.00 + -4.2x = -6.51 + -3.15
-4.2x = -6.51 + -3.15

Combine like terms: -6.51 + -3.15 = -9.66
-4.2x = -9.66

Divide each side by '-4.2'.
x = 2.3

Simplifying
x = 2.3

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