3b-11=b+4(21)

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Solution for 3b-11=b+4(21) equation:


Simplifying
3b + -11 = b + 4(21)

Reorder the terms:
-11 + 3b = b + 4(21)

Multiply 4 * 21
-11 + 3b = b + 84

Reorder the terms:
-11 + 3b = 84 + b

Solving
-11 + 3b = 84 + 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.
-11 + 3b + -1b = 84 + b + -1b

Combine like terms: 3b + -1b = 2b
-11 + 2b = 84 + b + -1b

Combine like terms: b + -1b = 0
-11 + 2b = 84 + 0
-11 + 2b = 84

Add '11' to each side of the equation.
-11 + 11 + 2b = 84 + 11

Combine like terms: -11 + 11 = 0
0 + 2b = 84 + 11
2b = 84 + 11

Combine like terms: 84 + 11 = 95
2b = 95

Divide each side by '2'.
b = 47.5

Simplifying
b = 47.5

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