4(a-3)=30

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Solution for 4(a-3)=30 equation: 


Simplifying
4(a + -3) = 30

Reorder the terms:
4(-3 + a) = 30
(-3 * 4 + a * 4) = 30
(-12 + 4a) = 30

Solving
-12 + 4a = 30

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 4a = 30 + 12

Combine like terms: -12 + 12 = 0
0 + 4a = 30 + 12
4a = 30 + 12

Combine like terms: 30 + 12 = 42
4a = 42

Divide each side by '4'.
a = 10.5

Simplifying
a = 10.5

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