20=-3(2x+1)+7

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Solution for 20=-3(2x+1)+7 equation:


Simplifying
20 = -3(2x + 1) + 7

Reorder the terms:
20 = -3(1 + 2x) + 7
20 = (1 * -3 + 2x * -3) + 7
20 = (-3 + -6x) + 7

Reorder the terms:
20 = -3 + 7 + -6x

Combine like terms: -3 + 7 = 4
20 = 4 + -6x

Solving
20 = 4 + -6x

Solving for variable 'x'.

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

Add '6x' to each side of the equation.
20 + 6x = 4 + -6x + 6x

Combine like terms: -6x + 6x = 0
20 + 6x = 4 + 0
20 + 6x = 4

Add '-20' to each side of the equation.
20 + -20 + 6x = 4 + -20

Combine like terms: 20 + -20 = 0
0 + 6x = 4 + -20
6x = 4 + -20

Combine like terms: 4 + -20 = -16
6x = -16

Divide each side by '6'.
x = -2.666666667

Simplifying
x = -2.666666667

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