815=7.7x+8.7y

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Solution for 815=7.7x+8.7y equation:


Simplifying
815 = 7.7x + 8.7y

Solving
815 = 7.7x + 8.7y

Solving for variable 'x'.

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

Add '-7.7x' to each side of the equation.
815 + -7.7x = 7.7x + -7.7x + 8.7y

Combine like terms: 7.7x + -7.7x = 0.0
815 + -7.7x = 0.0 + 8.7y
815 + -7.7x = 8.7y

Add '-815' to each side of the equation.
815 + -815 + -7.7x = -815 + 8.7y

Combine like terms: 815 + -815 = 0
0 + -7.7x = -815 + 8.7y
-7.7x = -815 + 8.7y

Divide each side by '-7.7'.
x = 105.8441558 + -1.12987013y

Simplifying
x = 105.8441558 + -1.12987013y

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