2x+6x+78+5a=90

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Solution for 2x+6x+78+5a=90 equation:


Simplifying
2x + 6x + 78 + 5a = 90

Reorder the terms:
78 + 5a + 2x + 6x = 90

Combine like terms: 2x + 6x = 8x
78 + 5a + 8x = 90

Solving
78 + 5a + 8x = 90

Solving for variable 'a'.

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

Add '-78' to each side of the equation.
78 + 5a + -78 + 8x = 90 + -78

Reorder the terms:
78 + -78 + 5a + 8x = 90 + -78

Combine like terms: 78 + -78 = 0
0 + 5a + 8x = 90 + -78
5a + 8x = 90 + -78

Combine like terms: 90 + -78 = 12
5a + 8x = 12

Add '-8x' to each side of the equation.
5a + 8x + -8x = 12 + -8x

Combine like terms: 8x + -8x = 0
5a + 0 = 12 + -8x
5a = 12 + -8x

Divide each side by '5'.
a = 2.4 + -1.6x

Simplifying
a = 2.4 + -1.6x

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