3(x+3) =-6 i dont know how to solve thie equation i need

-5

Step-by-step explanation: First multiply (x+3) by 3. You should get 3x + 9 = -6. Then you are supposed to isolate the X and to do this we first get rid of the 9. To do this we subtract nine on both sides and you should get 3x = -6 - 9. You can add the negative 9 and the negative 6 to get negative 15 ( 3x = -15). Now you need to isolate the x in (3x) and to do this we need to divide by three on both sides. When you divide three on both sides (3x) becomes X and (-15) becomes -5. SO [X = -5]

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc