-1-7(1-2k)=90

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Solution for -1-7(1-2k)=90 equation: 


Simplifying
-1 + -7(1 + -2k) = 90
-1 + (1 * -7 + -2k * -7) = 90
-1 + (-7 + 14k) = 90

Combine like terms: -1 + -7 = -8
-8 + 14k = 90

Solving
-8 + 14k = 90

Solving for variable 'k'.

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

Add '8' to each side of the equation.
-8 + 8 + 14k = 90 + 8

Combine like terms: -8 + 8 = 0
0 + 14k = 90 + 8
14k = 90 + 8

Combine like terms: 90 + 8 = 98
14k = 98

Divide each side by '14'.
k = 7

Simplifying
k = 7

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