3(b-1)=4(b+1)

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Solution for 3(b-1)=4(b+1) equation:


Simplifying
3(b + -1) = 4(b + 1)

Reorder the terms:
3(-1 + b) = 4(b + 1)
(-1 * 3 + b * 3) = 4(b + 1)
(-3 + 3b) = 4(b + 1)

Reorder the terms:
-3 + 3b = 4(1 + b)
-3 + 3b = (1 * 4 + b * 4)
-3 + 3b = (4 + 4b)

Solving
-3 + 3b = 4 + 4b

Solving for variable 'b'.

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

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

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

Combine like terms: 4b + -4b = 0
-3 + -1b = 4 + 0
-3 + -1b = 4

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

Combine like terms: -3 + 3 = 0
0 + -1b = 4 + 3
-1b = 4 + 3

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

Divide each side by '-1'.
b = -7

Simplifying
b = -7

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