5(7-k)+70(k-9)=1

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Solution for 5(7-k)+70(k-9)=1 equation:


Simplifying
5(7 + -1k) + 70(k + -9) = 1
(7 * 5 + -1k * 5) + 70(k + -9) = 1
(35 + -5k) + 70(k + -9) = 1

Reorder the terms:
35 + -5k + 70(-9 + k) = 1
35 + -5k + (-9 * 70 + k * 70) = 1
35 + -5k + (-630 + 70k) = 1

Reorder the terms:
35 + -630 + -5k + 70k = 1

Combine like terms: 35 + -630 = -595
-595 + -5k + 70k = 1

Combine like terms: -5k + 70k = 65k
-595 + 65k = 1

Solving
-595 + 65k = 1

Solving for variable 'k'.

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

Add '595' to each side of the equation.
-595 + 595 + 65k = 1 + 595

Combine like terms: -595 + 595 = 0
0 + 65k = 1 + 595
65k = 1 + 595

Combine like terms: 1 + 595 = 596
65k = 596

Divide each side by '65'.
k = 9.169230769

Simplifying
k = 9.169230769

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