(7+x)+7x=y

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Solution for (7+x)+7x=y equation:


Simplifying
(7 + x) + 7x = y

Remove parenthesis around (7 + x)
7 + x + 7x = y

Combine like terms: x + 7x = 8x
7 + 8x = y

Solving
7 + 8x = y

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 8x = -7 + y

Combine like terms: 7 + -7 = 0
0 + 8x = -7 + y
8x = -7 + y

Divide each side by '8'.
x = -0.875 + 0.125y

Simplifying
x = -0.875 + 0.125y

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