Identify the property that is being used to solve the problem:
-5 > -2x + 12
-5 + (-12) > -2x + 12 + (-12)

Addition Property of equality

Step-by-step explanation:

The same number is added to both sides of the equations,

so the addition Property of equality is used.

2

step-by-2step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18