20-3(x+15)=42

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Solution for 20-3(x+15)=42 equation:


Simplifying
20 + -3(x + 15) = 42

Reorder the terms:
20 + -3(15 + x) = 42
20 + (15 * -3 + x * -3) = 42
20 + (-45 + -3x) = 42

Combine like terms: 20 + -45 = -25
-25 + -3x = 42

Solving
-25 + -3x = 42

Solving for variable 'x'.

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

Add '25' to each side of the equation.
-25 + 25 + -3x = 42 + 25

Combine like terms: -25 + 25 = 0
0 + -3x = 42 + 25
-3x = 42 + 25

Combine like terms: 42 + 25 = 67
-3x = 67

Divide each side by '-3'.
x = -22.33333333

Simplifying
x = -22.33333333

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