2.5=x*4.2-18.5

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Solution for 2.5=x*4.2-18.5 equation:


Simplifying
2.5 = x * 4.2 + -18.5

Reorder the terms for easier multiplication:
2.5 = 4.2x + -18.5

Reorder the terms:
2.5 = -18.5 + 4.2x

Solving
2.5 = -18.5 + 4.2x

Solving for variable 'x'.

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

Add '-4.2x' to each side of the equation.
2.5 + -4.2x = -18.5 + 4.2x + -4.2x

Combine like terms: 4.2x + -4.2x = 0.0
2.5 + -4.2x = -18.5 + 0.0
2.5 + -4.2x = -18.5

Add '-2.5' to each side of the equation.
2.5 + -2.5 + -4.2x = -18.5 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -4.2x = -18.5 + -2.5
-4.2x = -18.5 + -2.5

Combine like terms: -18.5 + -2.5 = -21
-4.2x = -21

Divide each side by '-4.2'.
x = 5

Simplifying
x = 5

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