12x-1(7x+21)=10x-1

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Solution for 12x-1(7x+21)=10x-1 equation:


Simplifying
12x + -1(7x + 21) = 10x + -1

Reorder the terms:
12x + -1(21 + 7x) = 10x + -1
12x + (21 * -1 + 7x * -1) = 10x + -1
12x + (-21 + -7x) = 10x + -1

Reorder the terms:
-21 + 12x + -7x = 10x + -1

Combine like terms: 12x + -7x = 5x
-21 + 5x = 10x + -1

Reorder the terms:
-21 + 5x = -1 + 10x

Solving
-21 + 5x = -1 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
-21 + 5x + -10x = -1 + 10x + -10x

Combine like terms: 5x + -10x = -5x
-21 + -5x = -1 + 10x + -10x

Combine like terms: 10x + -10x = 0
-21 + -5x = -1 + 0
-21 + -5x = -1

Add '21' to each side of the equation.
-21 + 21 + -5x = -1 + 21

Combine like terms: -21 + 21 = 0
0 + -5x = -1 + 21
-5x = -1 + 21

Combine like terms: -1 + 21 = 20
-5x = 20

Divide each side by '-5'.
x = -4

Simplifying
x = -4

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