5(3(7)+7)-1=3(5x+k)+4

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Solution for 5(3(7)+7)-1=3(5x+k)+4 equation:


Simplifying
5(3(7) + 7) + -1 = 3(5x + k) + 4

Multiply 3 * 7
5(21 + 7) + -1 = 3(5x + k) + 4

Combine like terms: 21 + 7 = 28
5(28) + -1 = 3(5x + k) + 4

Multiply 5 * 28
140 + -1 = 3(5x + k) + 4

Combine like terms: 140 + -1 = 139
139 = 3(5x + k) + 4

Reorder the terms:
139 = 3(k + 5x) + 4
139 = (k * 3 + 5x * 3) + 4
139 = (3k + 15x) + 4

Reorder the terms:
139 = 4 + 3k + 15x

Solving
139 = 4 + 3k + 15x

Solving for variable 'k'.

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

Add '-3k' to each side of the equation.
139 + -3k = 4 + 3k + -3k + 15x

Combine like terms: 3k + -3k = 0
139 + -3k = 4 + 0 + 15x
139 + -3k = 4 + 15x

Add '-139' to each side of the equation.
139 + -139 + -3k = 4 + -139 + 15x

Combine like terms: 139 + -139 = 0
0 + -3k = 4 + -139 + 15x
-3k = 4 + -139 + 15x

Combine like terms: 4 + -139 = -135
-3k = -135 + 15x

Divide each side by '-3'.
k = 45 + -5x

Simplifying
k = 45 + -5x

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