27(n+4)+18n=7(n-18)-40n So confused can yall help me?

n = -3

Step-by-step explanation:

distribute

27n + 108 + 18n = 7n - 126 - 40n

combine

45n + 108 = -33n - 126

add 33n to both sides and subtract 108 to both sides

78n = -234

divide by 78

n = -3

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