42=4x+y

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Solution for 42=4x+y equation:


Simplifying
42 = 4x + y

Solving
42 = 4x + y

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
42 + -4x = 4x + -4x + y

Combine like terms: 4x + -4x = 0
42 + -4x = 0 + y
42 + -4x = y

Add '-42' to each side of the equation.
42 + -42 + -4x = -42 + y

Combine like terms: 42 + -42 = 0
0 + -4x = -42 + y
-4x = -42 + y

Divide each side by '-4'.
x = 10.5 + -0.25y

Simplifying
x = 10.5 + -0.25y

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