30a+7d=120

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Solution for 30a+7d=120 equation: 


Simplifying
30a + 7d = 120

Solving
30a + 7d = 120

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.
30a + 7d + -7d = 120 + -7d

Combine like terms: 7d + -7d = 0
30a + 0 = 120 + -7d
30a = 120 + -7d

Divide each side by '30'.
a = 4 + -0.2333333333d

Simplifying
a = 4 + -0.2333333333d

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