3+7b=4

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Solution for 3+7b=4 equation: 


Simplifying
3 + 7b = 4

Solving
3 + 7b = 4

Solving for variable 'b'.

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

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

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

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

Divide each side by '7'.
b = 0.1428571429

Simplifying
b = 0.1428571429

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