Answer:
24m-28
Step-by-step explanation:
4*6m=24m
-7*4=-28
24m -28
Answer:
d = -8
Step-by-step explanation:
Isolate the variable, d. Note the equal sign, what you do to one side, you do to the other. Divide -4 from both sides of the equation:

d = -8 is your answer.
~
Answer:
<u>22</u>
Step-by-step explanation:
8 - (-14)
<em>two subtraction signs become addition</em>
8 + 14
<em>add</em>
<u>22</u>
Answer:
81
Step-by-step explanation:
9 × 3n= 3^7
9×3n= 2187
27n= 2187
n= 2187/27
= 81
Hence n= 81
This works because she added the number to she if she got right