86=3(7x-1)+5

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Solution for 86=3(7x-1)+5 equation:


Simplifying
86 = 3(7x + -1) + 5

Reorder the terms:
86 = 3(-1 + 7x) + 5
86 = (-1 * 3 + 7x * 3) + 5
86 = (-3 + 21x) + 5

Reorder the terms:
86 = -3 + 5 + 21x

Combine like terms: -3 + 5 = 2
86 = 2 + 21x

Solving
86 = 2 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
86 + -21x = 2 + 21x + -21x

Combine like terms: 21x + -21x = 0
86 + -21x = 2 + 0
86 + -21x = 2

Add '-86' to each side of the equation.
86 + -86 + -21x = 2 + -86

Combine like terms: 86 + -86 = 0
0 + -21x = 2 + -86
-21x = 2 + -86

Combine like terms: 2 + -86 = -84
-21x = -84

Divide each side by '-21'.
x = 4

Simplifying
x = 4

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