It is 8x because you're adding them not multiplying them. If you were multiplying it would be8x^2
Answer:

Step-by-step explanation:

Subtract 2.7 on both sides

Multiply by 9

divide by -2

2. QM is congruent to QN
4, All right angles are congruent
5.QX is congruent to QX
6.SAS congruence
7.MX is congruent to NX
Answer:
-5
Step-by-step explanation:
its the same as adding positive numbers but with a minus sign so -3+(-2)= -5
Yes I do believe they are similar.