Explanation:
Simplifying
-3(x + 5) = -1(3x + 15)
Reorder the terms:
-3(5 + x) = -1(3x + 15)
(5 * -3 + x * -3) = -1(3x + 15)
(-15 + -3x) = -1(3x + 15)
Reorder the terms:
-15 + -3x = -1(15 + 3x)
-15 + -3x = (15 * -1 + 3x * -1)
-15 + -3x = (-15 + -3x)
Add '15' to each side of the equation.
-15 + 15 + -3x = -15 + 15 + -3x
Combine like terms: -15 + 15 = 0
0 + -3x = -15 + 15 + -3x
-3x = -15 + 15 + -3x
Combine like terms: -15 + 15 = 0
-3x = 0 + -3x
-3x = -3x
Add '3x' to each side of the equation.
-3x + 3x = -3x + 3x
Combine like terms: -3x + 3x = 0
0 = -3x + 3x
Combine like terms: -3x + 3x = 0
0 = 0
Solving
0 = 0
Couldn't find a variable to solve for.
This equation is an identity, all real numbers are solutions.