10x+(-42)+(-31x)=-21x+(-42)

Solution for 10x+(-42)+(-31x)=-21x+(-42) equation:

Simplifying
10x + (-42) + (-31x) = -21x + (-42)
10x + -42 + (-31x) = -21x + (-42)

Reorder the terms:
-42 + 10x + (-31x) = -21x + (-42)

Combine like terms: 10x + (-31x) = -21x
-42 + -21x = -21x + (-42)
-42 + -21x = -21x + -42

Reorder the terms:
-42 + -21x = -42 + -21x

Add '42' to each side of the equation.
-42 + 42 + -21x = -42 + 42 + -21x

Combine like terms: -42 + 42 = 0
0 + -21x = -42 + 42 + -21x
-21x = -42 + 42 + -21x

Combine like terms: -42 + 42 = 0
-21x = 0 + -21x
-21x = -21x

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.