3a+4c=90

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Solution for 3a+4c=90 equation: 


Simplifying
3a + 4c = 90

Solving
3a + 4c = 90

Solving for variable 'a'.

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

Add '-4c' to each side of the equation.
3a + 4c + -4c = 90 + -4c

Combine like terms: 4c + -4c = 0
3a + 0 = 90 + -4c
3a = 90 + -4c

Divide each side by '3'.
a = 30 + -1.333333333c

Simplifying
a = 30 + -1.333333333c

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