7x+a+a-3x=100

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Solution for 7x+a+a-3x=100 equation:


Simplifying
7x + a + a + -3x = 100

Reorder the terms:
a + a + 7x + -3x = 100

Combine like terms: a + a = 2a
2a + 7x + -3x = 100

Combine like terms: 7x + -3x = 4x
2a + 4x = 100

Solving
2a + 4x = 100

Solving for variable 'a'.

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

Add '-4x' to each side of the equation.
2a + 4x + -4x = 100 + -4x

Combine like terms: 4x + -4x = 0
2a + 0 = 100 + -4x
2a = 100 + -4x

Divide each side by '2'.
a = 50 + -2x

Simplifying
a = 50 + -2x

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