7=4+b

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Solution for 7=4+b equation: 


Simplifying
7 = 4 + b

Solving
7 = 4 + b

Solving for variable 'b'.

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

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

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

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

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

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

Divide each side by '-1'.
b = 3

Simplifying
b = 3

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