3(k-10)+4(k-19)=13

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Solution for 3(k-10)+4(k-19)=13 equation:


Simplifying
3(k + -10) + 4(k + -19) = 13

Reorder the terms:
3(-10 + k) + 4(k + -19) = 13
(-10 * 3 + k * 3) + 4(k + -19) = 13
(-30 + 3k) + 4(k + -19) = 13

Reorder the terms:
-30 + 3k + 4(-19 + k) = 13
-30 + 3k + (-19 * 4 + k * 4) = 13
-30 + 3k + (-76 + 4k) = 13

Reorder the terms:
-30 + -76 + 3k + 4k = 13

Combine like terms: -30 + -76 = -106
-106 + 3k + 4k = 13

Combine like terms: 3k + 4k = 7k
-106 + 7k = 13

Solving
-106 + 7k = 13

Solving for variable 'k'.

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

Add '106' to each side of the equation.
-106 + 106 + 7k = 13 + 106

Combine like terms: -106 + 106 = 0
0 + 7k = 13 + 106
7k = 13 + 106

Combine like terms: 13 + 106 = 119
7k = 119

Divide each side by '7'.
k = 17

Simplifying
k = 17

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