4r+10a=90

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Solution for 4r+10a=90 equation: 


Simplifying
4r + 10a = 90

Reorder the terms:
10a + 4r = 90

Solving
10a + 4r = 90

Solving for variable 'a'.

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

Add '-4r' to each side of the equation.
10a + 4r + -4r = 90 + -4r

Combine like terms: 4r + -4r = 0
10a + 0 = 90 + -4r
10a = 90 + -4r

Divide each side by '10'.
a = 9 + -0.4r

Simplifying
a = 9 + -0.4r

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