3a+4b=7b-a

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Solution for 3a+4b=7b-a equation:


Simplifying
3a + 4b = 7b + -1a

Reorder the terms:
3a + 4b = -1a + 7b

Solving
3a + 4b = -1a + 7b

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
3a + a + 4b = -1a + a + 7b

Combine like terms: 3a + a = 4a
4a + 4b = -1a + a + 7b

Combine like terms: -1a + a = 0
4a + 4b = 0 + 7b
4a + 4b = 7b

Add '-4b' to each side of the equation.
4a + 4b + -4b = 7b + -4b

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

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

Divide each side by '4'.
a = 0.75b

Simplifying
a = 0.75b

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