2a+3a+4a=5a-15

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Solution for 2a+3a+4a=5a-15 equation: 


Simplifying
2a + 3a + 4a = 5a + -15

Combine like terms: 2a + 3a = 5a
5a + 4a = 5a + -15

Combine like terms: 5a + 4a = 9a
9a = 5a + -15

Reorder the terms:
9a = -15 + 5a

Solving
9a = -15 + 5a

Solving for variable 'a'.

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

Add '-5a' to each side of the equation.
9a + -5a = -15 + 5a + -5a

Combine like terms: 9a + -5a = 4a
4a = -15 + 5a + -5a

Combine like terms: 5a + -5a = 0
4a = -15 + 0
4a = -15

Divide each side by '4'.
a = -3.75

Simplifying
a = -3.75

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