840=b-120

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Solution for 840=b-120 equation:


Simplifying
840 = b + -120

Reorder the terms:
840 = -120 + b

Solving
840 = -120 + 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.
840 + -1b = -120 + b + -1b

Combine like terms: b + -1b = 0
840 + -1b = -120 + 0
840 + -1b = -120

Add '-840' to each side of the equation.
840 + -840 + -1b = -120 + -840

Combine like terms: 840 + -840 = 0
0 + -1b = -120 + -840
-1b = -120 + -840

Combine like terms: -120 + -840 = -960
-1b = -960

Divide each side by '-1'.
b = 960

Simplifying
b = 960

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