4(80+b)-12=20

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Solution for 4(80+b)-12=20 equation:


Simplifying
4(80 + b) + -12 = 20
(80 * 4 + b * 4) + -12 = 20
(320 + 4b) + -12 = 20

Reorder the terms:
320 + -12 + 4b = 20

Combine like terms: 320 + -12 = 308
308 + 4b = 20

Solving
308 + 4b = 20

Solving for variable 'b'.

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

Add '-308' to each side of the equation.
308 + -308 + 4b = 20 + -308

Combine like terms: 308 + -308 = 0
0 + 4b = 20 + -308
4b = 20 + -308

Combine like terms: 20 + -308 = -288
4b = -288

Divide each side by '4'.
b = -72

Simplifying
b = -72

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