Answer:
x=19
Step-by-step explanation:
In order to solve for x, we want to add the equations to equal 180.
6x+12+3x-3=180
9x+9=180
9x=171
x=19
Answer:
approximately equal to 3.14
Answer:
-10 < x < -8
Step-by-step explanation:
Envision a number line. There is one whole number, -9, and and an infinite amount of fractions (rational numbers) and irrational numbers between -10 and -8.
X could be any of those values.
For this case we must simplify the following expression:

By definition of the law of multiplication signs we have to:

Rewriting the expression we have:

We add similar terms taking into account that:
Equal signs are added and the same sign is placed.

ANswer:
