3x + 12 - 5x = 22
-2x + 12 = 22
-2x = 10
x = -5
Write the equation out, x is going to be your unknown number.
Combine like terms.
We have to isolate x, so get rid of the 12 by subtracting it from both sides of the equation.
Divide by -2.
Is there a picture combined to this
The answer would be H. All you have to do for a problem like this in the future are to add the 3 different angles together and make sure they equal 180 degrees.
Answer:
5.34 x 10^-2
Step-by-step explanation:
