7-3(2x+5)=20

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Solution for 7-3(2x+5)=20 equation:


Simplifying
7 + -3(2x + 5) = 20

Reorder the terms:
7 + -3(5 + 2x) = 20
7 + (5 * -3 + 2x * -3) = 20
7 + (-15 + -6x) = 20

Combine like terms: 7 + -15 = -8
-8 + -6x = 20

Solving
-8 + -6x = 20

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + -6x = 20 + 8

Combine like terms: -8 + 8 = 0
0 + -6x = 20 + 8
-6x = 20 + 8

Combine like terms: 20 + 8 = 28
-6x = 28

Divide each side by '-6'.
x = -4.666666667

Simplifying
x = -4.666666667

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