4(3a+5)=9(9a-5)+12a

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Solution for 4(3a+5)=9(9a-5)+12a equation:


Simplifying
4(3a + 5) = 9(9a + -5) + 12a

Reorder the terms:
4(5 + 3a) = 9(9a + -5) + 12a
(5 * 4 + 3a * 4) = 9(9a + -5) + 12a
(20 + 12a) = 9(9a + -5) + 12a

Reorder the terms:
20 + 12a = 9(-5 + 9a) + 12a
20 + 12a = (-5 * 9 + 9a * 9) + 12a
20 + 12a = (-45 + 81a) + 12a

Combine like terms: 81a + 12a = 93a
20 + 12a = -45 + 93a

Solving
20 + 12a = -45 + 93a

Solving for variable 'a'.

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

Add '-93a' to each side of the equation.
20 + 12a + -93a = -45 + 93a + -93a

Combine like terms: 12a + -93a = -81a
20 + -81a = -45 + 93a + -93a

Combine like terms: 93a + -93a = 0
20 + -81a = -45 + 0
20 + -81a = -45

Add '-20' to each side of the equation.
20 + -20 + -81a = -45 + -20

Combine like terms: 20 + -20 = 0
0 + -81a = -45 + -20
-81a = -45 + -20

Combine like terms: -45 + -20 = -65
-81a = -65

Divide each side by '-81'.
a = 0.8024691358

Simplifying
a = 0.8024691358

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