3x+21=17x-(17*7)

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Solution for 3x+21=17x-(17*7) equation:


Simplifying
3x + 21 = 17x + -1(17 * 7)

Reorder the terms:
21 + 3x = 17x + -1(17 * 7)

Multiply 17 * 7
21 + 3x = 17x + -1(119)

Multiply -1 * 119
21 + 3x = 17x + -119

Reorder the terms:
21 + 3x = -119 + 17x

Solving
21 + 3x = -119 + 17x

Solving for variable 'x'.

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

Add '-17x' to each side of the equation.
21 + 3x + -17x = -119 + 17x + -17x

Combine like terms: 3x + -17x = -14x
21 + -14x = -119 + 17x + -17x

Combine like terms: 17x + -17x = 0
21 + -14x = -119 + 0
21 + -14x = -119

Add '-21' to each side of the equation.
21 + -21 + -14x = -119 + -21

Combine like terms: 21 + -21 = 0
0 + -14x = -119 + -21
-14x = -119 + -21

Combine like terms: -119 + -21 = -140
-14x = -140

Divide each side by '-14'.
x = 10

Simplifying
x = 10

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