5a+7d=90

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Solution for 5a+7d=90 equation: 


Simplifying
5a + 7d = 90

Solving
5a + 7d = 90

Solving for variable 'a'.

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

Add '-7d' to each side of the equation.
5a + 7d + -7d = 90 + -7d

Combine like terms: 7d + -7d = 0
5a + 0 = 90 + -7d
5a = 90 + -7d

Divide each side by '5'.
a = 18 + -1.4d

Simplifying
a = 18 + -1.4d

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