1.8=5-x+4.2

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Solution for 1.8=5-x+4.2 equation: 


Simplifying
1.8 = 5 + -1x + 4.2

Reorder the terms:
1.8 = 5 + 4.2 + -1x

Combine like terms: 5 + 4.2 = 9.2
1.8 = 9.2 + -1x

Solving
1.8 = 9.2 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
1.8 + x = 9.2 + -1x + x

Combine like terms: -1x + x = 0
1.8 + x = 9.2 + 0
1.8 + x = 9.2

Add '-1.8' to each side of the equation.
1.8 + -1.8 + x = 9.2 + -1.8

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + x = 9.2 + -1.8
x = 9.2 + -1.8

Combine like terms: 9.2 + -1.8 = 7.4
x = 7.4

Simplifying
x = 7.4

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