Solve for x using the addition principle.

Question

x+10=-8
The solution x=

Answer 1

The addition principle says you can add the same number to both sides of an equation without changing the value of the variable. In this case, we choose to add -10, so that the sum of constants on the left side will be zero.

x+10= -8

x+10-10= -8-10

x= -18