X+x=2x
3+3=6
2x+6
answer=2x+6
Answer:
3x13=39
Step-by-step explanation:
More than happy to help!
6/3= 2
When you divide powers, you subtract them.
7-4= 3
The answer is:
2*10^3
I hope this helped you!
Brainliest answer is always appreciated!
Answer:
9
Step-by-step explanation:
Let's say Mark is M and his brother is B.
M+5=B
M+B=23
Now we can solve using subsitution.
M+M+5=23
(Subtract 5 from both sides)
2M=18
M=9
Hope this helped!
