7a-4b=90

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Solution for 7a-4b=90 equation: 


Simplifying
7a + -4b = 90

Solving
7a + -4b = 90

Solving for variable 'a'.

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

Add '4b' to each side of the equation.
7a + -4b + 4b = 90 + 4b

Combine like terms: -4b + 4b = 0
7a + 0 = 90 + 4b
7a = 90 + 4b

Divide each side by '7'.
a = 12.85714286 + 0.5714285714b

Simplifying
a = 12.85714286 + 0.5714285714b

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