139+21+8+2b+15=189

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Solution for 139+21+8+2b+15=189 equation:


Simplifying
139 + 21 + 8 + 2b + 15 = 189

Reorder the terms:
139 + 21 + 8 + 15 + 2b = 189

Combine like terms: 139 + 21 = 160
160 + 8 + 15 + 2b = 189

Combine like terms: 160 + 8 = 168
168 + 15 + 2b = 189

Combine like terms: 168 + 15 = 183
183 + 2b = 189

Solving
183 + 2b = 189

Solving for variable 'b'.

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

Add '-183' to each side of the equation.
183 + -183 + 2b = 189 + -183

Combine like terms: 183 + -183 = 0
0 + 2b = 189 + -183
2b = 189 + -183

Combine like terms: 189 + -183 = 6
2b = 6

Divide each side by '2'.
b = 3

Simplifying
b = 3

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