2*-1+3*-1+4*-1+5*-1=x

Solution for 2*-1+3*-1+4*-1+5*-1=x equation:

Simplifying
2 * -1 + 3 * -1 + 4 * -1 + 5 * -1 = x

Multiply 2 * -1
-2 + 3 * -1 + 4 * -1 + 5 * -1 = x

Multiply 3 * -1
-2 + -3 + 4 * -1 + 5 * -1 = x

Multiply 4 * -1
-2 + -3 + -4 + 5 * -1 = x

Multiply 5 * -1
-2 + -3 + -4 + -5 = x

Combine like terms: -2 + -3 = -5
-5 + -4 + -5 = x

Combine like terms: -5 + -4 = -9
-9 + -5 = x

Combine like terms: -9 + -5 = -14
-14 = x

Solving
-14 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-14 + -1x = x + -1x

Combine like terms: x + -1x = 0
-14 + -1x = 0

Add '14' to each side of the equation.
-14 + 14 + -1x = 0 + 14

Combine like terms: -14 + 14 = 0
0 + -1x = 0 + 14
-1x = 0 + 14

Combine like terms: 0 + 14 = 14
-1x = 14

Divide each side by '-1'.
x = -14

Simplifying
x = -14