7=ab-cb-3

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Solution for 7=ab-cb-3 equation:


Simplifying
7 = ab + -1cb + -3

Reorder the terms:
7 = -3 + ab + -1bc

Solving
7 = -3 + ab + -1bc

Solving for variable 'a'.

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

Add '-1ab' to each side of the equation.
7 + -1ab = -3 + ab + -1ab + -1bc

Combine like terms: ab + -1ab = 0
7 + -1ab = -3 + 0 + -1bc
7 + -1ab = -3 + -1bc

Add '-7' to each side of the equation.
7 + -7 + -1ab = -3 + -7 + -1bc

Combine like terms: 7 + -7 = 0
0 + -1ab = -3 + -7 + -1bc
-1ab = -3 + -7 + -1bc

Combine like terms: -3 + -7 = -10
-1ab = -10 + -1bc

Divide each side by '-1b'.
a = 10b-1 + c

Simplifying
a = 10b-1 + c

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