3a=7a-15

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Solution for 3a=7a-15 equation: 


Simplifying
3a = 7a + -15

Reorder the terms:
3a = -15 + 7a

Solving
3a = -15 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
3a + -7a = -15 + 7a + -7a

Combine like terms: 3a + -7a = -4a
-4a = -15 + 7a + -7a

Combine like terms: 7a + -7a = 0
-4a = -15 + 0
-4a = -15

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

Simplifying
a = 3.75

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