3b+4a=7

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Solution for 3b+4a=7 equation: 


Simplifying
3b + 4a = 7

Reorder the terms:
4a + 3b = 7

Solving
4a + 3b = 7

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.
4a + 3b + -3b = 7 + -3b

Combine like terms: 3b + -3b = 0
4a + 0 = 7 + -3b
4a = 7 + -3b

Divide each side by '4'.
a = 1.75 + -0.75b

Simplifying
a = 1.75 + -0.75b

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