9(k-4)-(8k-5)=7

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Solution for 9(k-4)-(8k-5)=7 equation:


Simplifying
9(k + -4) + -1(8k + -5) = 7

Reorder the terms:
9(-4 + k) + -1(8k + -5) = 7
(-4 * 9 + k * 9) + -1(8k + -5) = 7
(-36 + 9k) + -1(8k + -5) = 7

Reorder the terms:
-36 + 9k + -1(-5 + 8k) = 7
-36 + 9k + (-5 * -1 + 8k * -1) = 7
-36 + 9k + (5 + -8k) = 7

Reorder the terms:
-36 + 5 + 9k + -8k = 7

Combine like terms: -36 + 5 = -31
-31 + 9k + -8k = 7

Combine like terms: 9k + -8k = 1k
-31 + 1k = 7

Solving
-31 + 1k = 7

Solving for variable 'k'.

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

Add '31' to each side of the equation.
-31 + 31 + 1k = 7 + 31

Combine like terms: -31 + 31 = 0
0 + 1k = 7 + 31
1k = 7 + 31

Combine like terms: 7 + 31 = 38
1k = 38

Divide each side by '1'.
k = 38

Simplifying
k = 38

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