Answer: 249800
Step-by-step explanation:
Uhh you round it.
For this case we have the following equation:

We must clear the variable "x":
We multiply by 2 on both sides of the equation:

We divide by h on both sides of the equation:

We subtract "a" on both sides of the equation:
Answer:
Answer:
a=
or ≈ -3.66
Step-by-step explanation:
-(3a+4)=7
-3a-4=7
<em>Add 4 to both sides</em>
-3a=11
<em>Multiply both sides by -1</em>
3a= -11
Divide both sides by 3
a= 
The sum of their ages is 71+68=149
They are actually 149 years old