-5=7-(10-b)

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Solution for -5=7-(10-b) equation:


Simplifying
-5 = 7 + -1(10 + -1b)
-5 = 7 + (10 * -1 + -1b * -1)
-5 = 7 + (-10 + 1b)

Combine like terms: 7 + -10 = -3
-5 = -3 + 1b

Solving
-5 = -3 + 1b

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.
-5 + -1b = -3 + 1b + -1b

Combine like terms: 1b + -1b = 0
-5 + -1b = -3 + 0
-5 + -1b = -3

Add '5' to each side of the equation.
-5 + 5 + -1b = -3 + 5

Combine like terms: -5 + 5 = 0
0 + -1b = -3 + 5
-1b = -3 + 5

Combine like terms: -3 + 5 = 2
-1b = 2

Divide each side by '-1'.
b = -2

Simplifying
b = -2

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