3a-4a=20-15a

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Solution for 3a-4a=20-15a equation:


Simplifying
3a + -4a = 20 + -15a

Combine like terms: 3a + -4a = -1a
-1a = 20 + -15a

Solving
-1a = 20 + -15a

Solving for variable 'a'.

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

Add '15a' to each side of the equation.
-1a + 15a = 20 + -15a + 15a

Combine like terms: -1a + 15a = 14a
14a = 20 + -15a + 15a

Combine like terms: -15a + 15a = 0
14a = 20 + 0
14a = 20

Divide each side by '14'.
a = 1.428571429

Simplifying
a = 1.428571429

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