4.20=.75+x

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Solution for 4.20=.75+x equation:


Simplifying
4.20 = 0.75 + x

Solving
4.20 = 0.75 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
4.20 + -1x = 0.75 + x + -1x

Combine like terms: x + -1x = 0
4.20 + -1x = 0.75 + 0
4.20 + -1x = 0.75

Add '-4.20' to each side of the equation.
4.20 + -4.20 + -1x = 0.75 + -4.20

Combine like terms: 4.20 + -4.20 = 0.00
0.00 + -1x = 0.75 + -4.20
-1x = 0.75 + -4.20

Combine like terms: 0.75 + -4.20 = -3.45
-1x = -3.45

Divide each side by '-1'.
x = 3.45

Simplifying
x = 3.45

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