4.2=.75Y+x

Solution for 4.2=.75Y+x equation:

Simplifying
4.2 = 0.75Y + x

Solving
4.2 = 0.75Y + x

Solving for variable 'Y'.

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

Add '-0.75Y' to each side of the equation.
4.2 + -0.75Y = 0.75Y + -0.75Y + x

Combine like terms: 0.75Y + -0.75Y = 0.00
4.2 + -0.75Y = 0.00 + x
4.2 + -0.75Y = x

Add '-4.2' to each side of the equation.
4.2 + -4.2 + -0.75Y = -4.2 + x

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + -0.75Y = -4.2 + x
-0.75Y = -4.2 + x

Divide each side by '-0.75'.
Y = 5.6 + -1.333333333x

Simplifying
Y = 5.6 + -1.333333333x