2a+b+3a-4b=0

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Solution for 2a+b+3a-4b=0 equation:


Simplifying
2a + b + 3a + -4b = 0

Reorder the terms:
2a + 3a + b + -4b = 0

Combine like terms: 2a + 3a = 5a
5a + b + -4b = 0

Combine like terms: b + -4b = -3b
5a + -3b = 0

Solving
5a + -3b = 0

Solving for variable 'a'.

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

Add '3b' to each side of the equation.
5a + -3b + 3b = 0 + 3b

Combine like terms: -3b + 3b = 0
5a + 0 = 0 + 3b
5a = 0 + 3b
Remove the zero:
5a = 3b

Divide each side by '5'.
a = 0.6b

Simplifying
a = 0.6b

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