4(a+b)=9a

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Solution for 4(a+b)=9a equation:


Simplifying
4(a + b) = 9a
(a * 4 + b * 4) = 9a
(4a + 4b) = 9a

Solving
4a + 4b = 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
4a + -9a + 4b = 9a + -9a

Combine like terms: 4a + -9a = -5a
-5a + 4b = 9a + -9a

Combine like terms: 9a + -9a = 0
-5a + 4b = 0

Add '-4b' to each side of the equation.
-5a + 4b + -4b = 0 + -4b

Combine like terms: 4b + -4b = 0
-5a + 0 = 0 + -4b
-5a = 0 + -4b
Remove the zero:
-5a = -4b

Divide each side by '-5'.
a = 0.8b

Simplifying
a = 0.8b

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