7a+9b=80

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Solution for 7a+9b=80 equation: 


Simplifying
7a + 9b = 80

Solving
7a + 9b = 80

Solving for variable 'a'.

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

Add '-9b' to each side of the equation.
7a + 9b + -9b = 80 + -9b

Combine like terms: 9b + -9b = 0
7a + 0 = 80 + -9b
7a = 80 + -9b

Divide each side by '7'.
a = 11.42857143 + -1.285714286b

Simplifying
a = 11.42857143 + -1.285714286b

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